Denon x3800h vs x4800h for sound?

[EWL5]

Absolutely, when I had the AVR-X1800H, the first thing I did was to set the front L to front R to preamp mode. I most likely can't hear the difference between 85 and 75 dB SINAD, but if I can get 10 dB higher SINAD it would be silly not to get it, let alone the other benefits of preamp mode such as lower consumption, and clipping the power amps for no reasons, when they are not used anyway.

The huge advantages of the Denon/Marantz AVRs at that price level are the flexible preamp mode (i.e. by individual channels) and the 4 discrete subwoofer outputs, as much as I really would have preferred Onkyo's RZ30 and RZ50, there is no way I would go for them instead of the X3800H that is unbeatable at its current sales price. Some will say, well Onkyo's include the DL license, that is true but D+M includes Audyssey XT32, SubEQ HT that is very capable when used with the $20 app, so one should have no hurry to upgrade to DLBC. I am still considering buying the X3800H and just use it as a toy, that could be a backup for my main system though I hope it will never be called for such duty lol.....

A little known fact is the 3800+ series also includes the SHARC chip that helps w/some heavy lifting (especially for Dirac). Just buying in bulk, I think the chip goes for $30+ each so added value despite not including DL license as in similar range Onkyos. My older Pioneer Elites used to have them as well but I don't think recent ones do (w/the possible exception of the flagship 805)!

 

[Tiago Pimentel]

Hi guys,

Sorry to dig this up, but for my situation I was thinking if I could save some money and get 3 fosi v3 mono for LCR. I'll get 240W at 4ohm for each channel, which would allow me to get at least 98dbs off my speakers (Arendal 1723 monitor S). Any thoughts?

Thanks

 

[peng]

Hi guys,

Sorry to dig this up, but for my situation I was thinking if I could save some money and get 3 fosi v3 mono for LCR. I'll get 240W at 4ohm for each channel, which would allow me to get at least 98dbs off my speakers (Arendal 1723 monitor S). Any thoughts?

Thanks

Good idea!

 

[Mike E Mike]

Wow, Great info and website. I have a 3800 which just arrived and I purchased a Emotiva basx3 for the Marantz 70 s which I sent back due to its power constant power failure. Not sure if I set it up correctly or played something to loud but wasn’t going to chance being stuck with it. I’m an avid 4K movie watcher and listen to Apple Music 4k device. I’m currently running a Sony An 1000 and actually love the sound and music is incredible. But I guess I fell for the hype of a power amp so I have to try and utilize it with the 3800. Any suggestions as to using the Emotiva for the front stage and I’ve always had the dreaded center channel dialogue issue which is the main reason for the power amp. Happy New Year to all

 

[peng]

Wow, Great info and website. I have a 3800 which just arrived and I purchased a Emotiva basx3 for the Marantz 70 s which I sent back due to its power constant power failure. Not sure if I set it up correctly or played something to loud but wasn’t going to chance being stuck with it. I’m an avid 4K movie watcher and listen to Apple Music 4k device. I’m currently running a Sony An 1000 and actually love the sound and music is incredible. But I guess I fell for the hype of a power amp so I have to try and utilize it with the 3800. Any suggestions as to using the Emotiva for the front stage and I’ve always had the dreaded center channel dialogue issue which is the main reason for the power amp. Happy New Year to all

The bass x amps are only slightly more powerful than the avr amps. At that price point we mostly recommend Hypex amps such as the NC502MP by buckeyeamp, Apollon, Audiophonic, VTV etc. That likely won't solve dialogue issues that have more to do with recording/mastering.

 

[Mike E Mike]

Thank you unfortunately I’ve already purchased the Emotiva, I’m unboxing the 3800 and see what it sounds like

 

[Randyman...]

Thank you unfortunately I’ve already purchased the Emotiva, I’m unboxing the 3800 and see what it sounds like

If you missed it - To achieve the best possible SINAD from your 3800 and external amps, set your L/C/R (and any other externally amplified channels) to "Pre Out" in the Speaker Setup page. It seems this avoids double-terminating the output driver (disconnects the internal amp's input) and improves SINAD at the RCA outs at higher output levels.

 

[OhmSweetOhm]

Sorry to reopen this thread. Many people say there will be no audible difference between these two AVRs, but others have pointed out that in Amir’s SINAD measurements the X4800H scored better. He also recommended the X4800H instead of the X3800H.

Since my one week old X3800H is showing some HDMI issues, I can exchange it for an open box X4800H for an additional 380 euro.

Assuming both units work as intended, would the 380 euro be a good investment for music and home theater? I am using Fosi V3 mono amps for the front channels and a 5.1 setup.

Someone on AVS Forum mentioned the following:

Here are the key reasons to pick the X4800H over the X3800H:

1. Better Audio Performance

• More Powerful Amplification: The X4800Hdelivers 125W per channel (8Ω, 2-ch driven)versus 105W per channel in the X3800H, providing more headroom for demanding speakers.
• Upgraded Internal Components: The X4800H has higher-quality capacitors and power supplies, leading to better overall sound clarity and dynamics.

2. Build Quality and Chassis Design

• The X4800H uses a monolithic amplifier design, which typically results in better power efficiency and stability.
• Heavier and better-built chassis for reduced vibrations and enhanced durability.

3. Enhanced Processing and DACs

• The X4800H features better 32-bit DACs (Digital-to-Analog Converters), contributing to improved audio fidelity, especially for Hi-Res music and surround sound processing.

4. More Multizone and Custom Installation Features

• The X4800H has an extra HDMI output (3 total vs. 2 on the X3800H), which is useful for multi-zone setups.
• More advanced custom integration support for home automation systems.

5. IMAX Enhanced Certification

• The X4800H has IMAX Enhanced support, which is missing from the X3800H. This can provide a better movie-watching experience with supported content.

6. Slightly Better Preamp Mode

• While both models support Preamp Mode, the X4800H has better power supply components, potentially making it a stronger choice for users who plan to use external amplifiers.

 

[Mort]

Definitely not if using external amplification. No point.

 

[delta76]

Sorry to reopen this thread. Many people say there will be no audible difference between these two AVRs, but others have pointed out that in Amir’s SINAD measurements the X4800H scored better. He also recommended the X4800H instead of the X3800H.

Since my one week old X3800H is showing some HDMI issues, I can exchange it for an open box X4800H for an additional 380 euro.

Assuming both units work as intended, would the 380 euro be a good investment for music and home theater? I am using Fosi V3 mono amps for the front channels and a 5.1 setup.

Someone on AVS Forum mentioned the following:

Here are the key reasons to pick the X4800H over the X3800H:

1. Better Audio Performance

• More Powerful Amplification: The X4800Hdelivers 125W per channel (8Ω, 2-ch driven)versus 105W per channel in the X3800H, providing more headroom for demanding speakers.
• Upgraded Internal Components: The X4800H has higher-quality capacitors and power supplies, leading to better overall sound clarity and dynamics.

2. Build Quality and Chassis Design

• The X4800H uses a monolithic amplifier design, which typically results in better power efficiency and stability.
• Heavier and better-built chassis for reduced vibrations and enhanced durability.

3. Enhanced Processing and DACs

• The X4800H features better 32-bit DACs (Digital-to-Analog Converters), contributing to improved audio fidelity, especially for Hi-Res music and surround sound processing.

4. More Multizone and Custom Installation Features

• The X4800H has an extra HDMI output (3 total vs. 2 on the X3800H), which is useful for multi-zone setups.
• More advanced custom integration support for home automation systems.

5. IMAX Enhanced Certification

• The X4800H has IMAX Enhanced support, which is missing from the X3800H. This can provide a better movie-watching experience with supported content.

6. Slightly Better Preamp Mode

• While both models support Preamp Mode, the X4800H has better power supply components, potentially making it a stronger choice for users who plan to use external amplifiers.

Please don't spread wrong information, likely from ChatGPT
You won't hear any difference between those two. and x3800h is IMAX Enhanced.

The biggest reason to choose x4800h over x3800h is that you have money and want something nicer (yet not enough for x6800h). In 99% use cases they are basically the same.

 

[OhmSweetOhm]

Please don't spread wrong information, likely from ChatGPT
You won't hear any difference between those two. and x3800h is IMAX Enhanced.

The biggest reason to choose x4800h over x3800h is that you have money and want something nicer (yet not enough for x6800h). In 99% use cases they are basically the same.

Thanks for the reply. That AVforum poster probably used AI!? not sure. Good to know the 3800 is as good. I still have 3 questions:

1) The monolithic design is vague to me, no advantage of the 4800?
2) AL32 processing what the x3800 does not seem have no "issue"?
3) Lastly, I was also referring to Amirs SINAD processing graph, where the x3800h is in the poor category and the x4800h in the middle...

 

[peng]

Sorry to reopen this thread. Many people say there will be no audible difference between these two AVRs, but others have pointed out that in Amir’s SINAD measurements the X4800H scored better. He also recommended the X4800H instead of the X3800H.

Since my one week old X3800H is showing some HDMI issues, I can exchange it for an open box X4800H for an additional 380 euro.

Assuming both units work as intended, would the 380 euro be a good investment for music and home theater? I am using Fosi V3 mono amps for the front channels and a 5.1 setup.

Someone on AVS Forum mentioned the following:

Here are the key reasons to pick the X4800H over the X3800H:

1. Better Audio Performance

• More Powerful Amplification: The X4800Hdelivers 125W per channel (8Ω, 2-ch driven)versus 105W per channel in the X3800H, providing more headroom for demanding speakers.
• Upgraded Internal Components: The X4800H has higher-quality capacitors and power supplies, leading to better overall sound clarity and dynamics.

Mostly false information, the 20 WPC more will only make a difference if you actually need that extra 20 W, most users wouldn't push their amps anywhere close to that point and if they are counting on that, they should get an external power amp anyway. 105 W vs 125 W is like one click difference on the volume dial, practically negligible but looks good on paper.

2. Build Quality and Chassis Design

• The X4800H uses a monolithic amplifier design, which typically results in better power efficiency and stability.
• Heavier and better-built chassis for reduced vibrations and enhanced durability.

True, but typically no audible sound quality improvements.

3. Enhanced Processing and DACs

• The X4800H features better 32-bit DACs (Digital-to-Analog Converters), contributing to improved audio fidelity, especially for Hi-Res music and surround sound processing.

False info, X3800H and X4800H use the same 32 bit DAC. If you are using AI such as Google's you need to challenge their answers on this and they will back off and tell you the truth or something closer to the truth.

4. More Multizone and Custom Installation Features

• The X4800H has an extra HDMI output (3 total vs. 2 on the X3800H), which is useful for multi-zone setups.

False, they both have 3 HDMI outputs.

• More advanced custom integration support for home automation systems.

5. IMAX Enhanced Certification

• The X4800H has IMAX Enhanced support, which is missing from the X3800H. This can provide a better movie-watching experience with supported content.

False information

6. Slightly Better Preamp Mode

• While both models support Preamp Mode, the X4800H has better power supply components, potentially making it a stronger choice for users who plan to use external amplifiers.

Mostly false, and key word is "potentially" and the 4800 did do better based on Amir's bench test, but that's one test and just because it measured better, it does not mean it would do better in sound quality in real world use (that is, for music listening instead of test tones etc.)

 

[90sNintendoKid]

I agree with previous comments. I decided to stop SINAD chasing and I have just bought a Denon 3800H and I use external amplification and along with Dirac ART and Magic Beans True Target, I am delighted with the sound. I have made objective (measured in REW) improvements to my system using Dirac ART + Magic Beans + 4 subwoofers and using speakers with good directivity (Kef Q350 for the L/R and Kef Q150 for surrounds, also tried Polk XT20s which I also thought were great and have good directivity ) which I believe makes more of a difference than the SINAD difference between the 3800H and 4800H. The only reason I would go for the 6800H is for 6 height channels and I'm glad I didn't because I have been underwhelmed by Atmos in general and I don't have room for side surrounds and middle height channels.

I have observed (with REW measurements) and experienced and noticed that I get better sound when I use speakers, along with EQ, that have good directivity and I first heard this from @joentell.

 

[peng]

Thanks for the reply. That AVforum poster probably used AI!? not sure. Good to know the 3800 is as good. I still have 3 questions:

1) The monolithic design is vague to me, no advantage of the 4800?

In theory yes but measurements didn't seem to show any difference.

2) AL32 processing what the x3800 does not seem have no "issue"?

I think that is mostly marketing hype, like Marantz claims of their so called musical and warm sound, try finding someone who claimed the x4800h sounded better than the x3800h and others, including Marantz that don't have AL32 and DDSC you won't find one, if you do, you will find that they just claimed, and never did it "blind" or equal level match.. IMO this is a non issue.

3) Lastly, I was also referring to Amirs SINAD processing graph, where the x3800h is in the poor category and the x4800h in the middle...

I posted my comments on this many time, you can do a search if yo are interested, basically, I won't draw a conclusion based one tests that to me, the 12 dB lower in SINAD might have due to something in the test that was done differently. If you look at the measurements of the X3500H, X3600H, X3700H, X4700H, X6700H, you don't see such 12 dB gap, so think about that... Now, if it is true that the 3800 did 12 dB worse, it still wouldn't matter in terms of audible sound quality difference. Remember the Marantz AV7705, SR 6014, 7015, AV8805, also measured on ASR and they didn't do better than the x3800h, in fact mostly managed only about 75 to 76 dB SINAD in that same test, yet how often you hear/see their owners claiming they sounded not as good as Denon's that measured 95 to 100 dB SINAD? So again, logically speaking I have to say this is also a non issue, just forum talks for fun. If the cost difference is not significant (it is in Canada and USA) as some reported a difference of about 300 to 350 Euro, then I would likely go with the X4800H, for the better measured performance, flipped down display, 1 additional HDMI input, whether it would sound "Better" or not. As to made in Japan vs Vietnam, I don't think that is a factor, in fact for whatever reason(s), it seems that they has been more trouble report from the x4800H owners that X3800H owners on ASR.

 

[EWL5]

False info, X3800H and X4800H use the same 32 bit DAC. If you are using AI such as Google's you need to challenge their answers on this and they will back off and tell you the truth or something closer to the truth.

Great response to what appears to be an AI answer to a prompt. I will add although the pic below has made its rounds on the internet, not everyone is privy to the internal Denon French presentation that was leaked. AI would surely change its tune if it had some sort of picture/object recognition that was more than rudimentary!

 

[peng]

Great response to what appears to be an AI answer to a prompt. I will add although the pic below has made its rounds on the internet, not everyone is privy to the internal Denon French presentation that was leaked. AI would surely change its tune if it had some sort of picture/object recognition that was more than rudimentary!

Yes if people push AI back all the time, they will learn and improve. Otherwise they will continue to rely a lot on hearsay perpetuated by the internet talks including forum talks such as ours.

 

[EWL5]

Sorry to reopen this thread. Many people say there will be no audible difference between these two AVRs, but others have pointed out that in Amir’s SINAD measurements the X4800H scored better. He also recommended the X4800H instead of the X3800H.

Since my one week old X3800H is showing some HDMI issues, I can exchange it for an open box X4800H for an additional 380 euro.

Assuming both units work as intended, would the 380 euro be a good investment for music and home theater? I am using Fosi V3 mono amps for the front channels and a 5.1 setup.

Someone on AVS Forum mentioned the following:

Here are the key reasons to pick the X4800H over the X3800H:

1. Better Audio Performance

• More Powerful Amplification: The X4800Hdelivers 125W per channel (8Ω, 2-ch driven)versus 105W per channel in the X3800H, providing more headroom for demanding speakers.
• Upgraded Internal Components: The X4800H has higher-quality capacitors and power supplies, leading to better overall sound clarity and dynamics.

2. Build Quality and Chassis Design

• The X4800H uses a monolithic amplifier design, which typically results in better power efficiency and stability.
• Heavier and better-built chassis for reduced vibrations and enhanced durability.

3. Enhanced Processing and DACs

• The X4800H features better 32-bit DACs (Digital-to-Analog Converters), contributing to improved audio fidelity, especially for Hi-Res music and surround sound processing.

4. More Multizone and Custom Installation Features

• The X4800H has an extra HDMI output (3 total vs. 2 on the X3800H), which is useful for multi-zone setups.
• More advanced custom integration support for home automation systems.

5. IMAX Enhanced Certification

• The X4800H has IMAX Enhanced support, which is missing from the X3800H. This can provide a better movie-watching experience with supported content.

6. Slightly Better Preamp Mode

• While both models support Preamp Mode, the X4800H has better power supply components, potentially making it a stronger choice for users who plan to use external amplifiers.

This post has proved the following:

• Marketing still works
• AI can't give accurate answers to save its life (or humans for that matter)
• People will always pay hundreds of dollars more in the US to avoid a number that is colored red in someone's bar graph that won't make a difference in normal listening conditions)

 

[90sNintendoKid]

This post has proved the following:

• Marketing still works
• AI can't give accurate answers to save its life (or humans for that matter)
• People will always pay hundreds of dollars more in the US to avoid a number that is colored red in someone's bar graph that won't make a difference in normal listening conditions)

I agree AI based on it's own training data can't give accurate answers to this type of thing and I also propose based on my experience that AI with web search and deep research answers these types of questions a lot better.

These have the same prompt: "Denon 3800H vs Denon 4800H"

I noticed that Perplexity got some things wrong like the 3800H does have 4 independent subwoofers and both the 3800H and 4800H support 5.4.6.

I reckon the Claude Research version is pretty good.

Spoiler: Perplexity Deep Research

Denon AVR-3800H vs Denon AVR-4800H​

The Denon AVR-4800H is the more powerful and feature-rich model, positioned as a step up from the AVR-3800H. Here's a comprehensive comparison:

Power and Amplification​

The AVR-4800H delivers 125 watts per channel (8 ohms, 20Hz-20kHz) compared to the 3800H's 105 watts per channel. More significantly, the 4800H uses a monolithic amplifier design with each amplifier module on a separate board using higher-quality components, whereas the 3800H uses a shared PCB for multiple channels. This architectural difference can result in better dynamics, improved channel separation, and a cleaner sound from the 4800H.crutchfield+2

Processing and Audio Features​

The 4800H features 32-bit processing (AL32 and HD32 processing), providing greater precision in audio signal processing compared to the 3800H's standard processing. Both receivers support the same immersive audio formats—Dolby Atmos, DTS:X, Auro-3D, IMAX Enhanced, and 360 Reality Audio. The 4800H supports 5.4.4 Dolby Atmos setups specifically.homecinemachoice+2

Channel Configuration and Subwoofers​

The 4800H provides four independent subwoofer channels, while the 3800H supports standard subwoofer connectivity. The 3800H can support 5.x.6 and 7.x.4 layouts, whereas the 4800H is optimized for 7.4.4 configurations. Both offer 9 channels of internal amplification with processing capability up to 11.4 channels.reddit+3

Video Connectivity​

The 4800H has 7 HDMI inputs versus the 3800H's 6 inputs. Both feature HDMI 2.1 with 8K/60Hz and 4K/120Hz support, though the 4800H has a front HDMI port while the 3800H does not.prohifi+1

Build Quality​

The 4800H includes a metal front panel and is manufactured in Japan, offering a more robust build compared to the 3800H.simplehomecinema+1

Practical Sound Performance​

In real-world usage, the acoustic difference may be subtle for casual listening. However, the 4800H's superior amplifier design becomes more noticeable when driving height channels or when demanding clarity and channel separation, particularly if you're sensitive to transient detail and low-frequency dynamics.reddit+1

Value Proposition​

The 3800H offers better value if you plan to use external amplifiers and treat the receiver primarily as a processor. The 4800H delivers superior value if you'll rely on internal amplification, especially for complete speaker configurations that utilize all nine channels. Given that the 4800H inherits the amplifier design from the flagship X6700H, it represents notably better sonic performance than the 3800H if you can justify the price difference.simplehomecinema

1. https://www.crutchfield.com/p_033AVX3800/Denon-AVR-X3800H.html
2. https://hometheaterhifi.com/reviews...eceivers/denon-avr-x4800h-av-receiver-review/
3. https://simplehomecinema.com/2023/02/06/denon-x3800h-versus-denon-x4800h/
4. https://www.homecinemachoice.com/content/denon-avr-x4800h-av-receiver-review
5. https://prohifi.in/blogs/news/denon-avr-x3800h-vs-denon-avc-x4800h-a-detailed-comparison
6. https://www.reddit.com/r/hometheater/comments/zfva1i/need_advice_denon_avcx3800h_vs_4800
7. https://www.whathifi.com/reviews/denon-avc-x3800h
8. https://petertyson.co.uk/denon-avc-x4800h-9-4-ch-8k-av-amplifier
9. https://audiot.co.uk/p-31038-denon-avc-x3800h-av-receiver-denon-audio-t.aspx
10. http://www.sevenoakssoundandvision.co.uk/p-55775-denon-avc-x3800h-av-amplifier.aspx

Spoiler: Claude Research

Denon X3800H vs X4800H: A $800 decision with diminishing returns​

The AVR-X3800H delivers 95% of the X4800H's performance at 68% of the price, making it the smarter choice for most home theater enthusiasts. Both receivers share identical DSP processing, room correction, and feature sets—the X4800H's premium buys you marginally more power, a monolithic amplifier design, Japanese manufacturing, and Zone 3 support. For typical living rooms with efficient speakers, these differences are inaudible; for dedicated theaters with demanding speakers, the X4800H's extras become meaningful.

Core specifications reveal more similarities than differences​

Both receivers are 9.4-channel designs with identical 11.4-channel processing capability (requiring external amplification for the extra two channels). They share the same Analog Devices ADSP-21593 dual-SHARC+ DSP chip, Texas Instruments PCM5102A DACs, and comprehensive format support including Dolby Atmos, DTS:X Pro, IMAX Enhanced, and Auro-3D.

Specification	AVR-X3800H	AVR-X4800H
Power (8Ω, 2ch driven)	105W @ 0.08% THD	125W @ 0.05% THD
Power (6Ω, 1ch driven)	180W	165W
HDMI Inputs (all 2.1)	6	7
HDMI Outputs	3 (2×8K, 1×4K Zone)	3 (2×8K, 1×4K Zone)
Zone Support	Zone 2	Zone 2 + Zone 3
12V Triggers	1	3
Weight	27.6 lbs	29.1 lbs
MSRP	$1,699	$2,499
Street Price (Dec 2025)	$999–$1,459	$1,500–$1,875

The 20W power difference translates to roughly 1.2dB—barely perceptible even under ideal laboratory conditions. Both receivers handle 8K/60Hz and 4K/120Hz passthrough, VRR, ALLM, and eARC identically through their HDMI 2.1 implementations.

The X4800H's premium amplifier design matters—sometimes​

The most significant engineering difference lies in amplifier topology. The X4800H uses a monolithic constructioninherited from the flagship X6700H, with each amplifier channel on its own circuit board. This reduces crosstalk and improves channel separation during demanding multi-channel passages. The X3800H uses a more conventional shared-PCB design.
In practice, AVS Forum users who've compared both units report "no audible difference" in typical home theater use. The monolithic advantage emerges only when simultaneously driving all nine channels at high volumes with low-sensitivity speakers—a scenario most users never encounter. If you're running a 5.1.4 system with efficient Klipsch or JBL speakers in a medium-sized room, this difference evaporates entirely.
The X4800H also includes AL32 Processing (32-bit digital extension) and a Clock Jitter Reducer for improved digital precision. While technically measurable, these refinements fall well below audibility thresholds—speaker distortion at 0.1%+ dwarfs any DAC-level differences in the 0.004% range.

Room correction and immersive audio are identical​

Both receivers include Audyssey MultEQ XT32, Denon's full-featured room correction with Dynamic EQ, Dynamic Volume, and Sub EQ HT for independent calibration of up to four subwoofers. The $19.99 MultEQ Editor app unlocks the same advanced tuning on both models. Crucially, both support the optional Dirac Live upgrade ($349 for full bandwidth), giving serious users access to industry-leading room correction.
Four independent subwoofer outputs with individual delay, trim, and EQ represent a standout feature on both receivers—rare at this price point and essential for distributed bass array setups. Format support is comprehensive:

• Dolby Atmos up to 7.1.4 (internal) or via external amps
• DTS:X Pro with Neural:X upmixing
• IMAX Enhanced certification
• Auro-3D with Auro-Matic upmixer (built-in, not an upgrade)
• 360 Reality Audio and MPEG-H passthrough

Build quality and manufacturing origin diverge sharply​

The X4800H is manufactured at Denon's Shirakawa Audio Works in Fukushima, Japan—the same facility producing the flagship AVR-A1H. The X3800H is built in Vietnam. This distinction carries real implications: Japanese manufacturing historically correlates with tighter component tolerances, better quality control, and perceived long-term reliability.
Physically, the X4800H features a metal front panel versus the X3800H's plastic, along with a 2-line display (versus 1-line) and additional 12V triggers for custom installations. The X4800H weighs approximately 1.5 lbs more, reflecting its beefier power supply and discrete amplifier boards. Both share aluminum heatsinks and identical 1080p on-screen GUIs—Denon's best-in-class interface.
Neither receiver runs cool under load. Adequate ventilation with 4+ inches of clearance above the unit is essential, particularly for the X4800H during sustained high-volume operation.

Gaming and HDMI 2.1 performance match perfectly​

For console gamers with PS5 or Xbox Series X, both receivers deliver identical performance. Full HDMI 2.1 support on all inputs includes:

• 4K/120Hz passthrough at 4:4:4 (40 Gbps bandwidth)
• VRR (Variable Refresh Rate) for tear-free gaming
• ALLM (Auto Low Latency Mode) for automatic game mode switching
• 8K/60Hz passthrough and upscaling
• HDR10, HDR10+, Dolby Vision, and HLG

Input lag is imperceptible on both. PC gamers should note that 4K/144Hz requires direct TV connection—both receivers cap at 120Hz. Early HDMI handshake issues reported on 2022-2023 firmware have been largely resolved through updates, though proper certified HDMI 2.1 cables remain essential.

Value analysis reveals clear use-case winners​

The $800 MSRP gap (often $300–$500 at street prices) must justify tangible benefits. Here's how the decision breaks down:
Choose the AVR-X3800H ($999–$1,459 street) if:

• Your room is under 400 square feet
• Your speakers measure 88dB sensitivity or higher
• You plan to add external amplification later
• You want to redirect savings toward better speakers or subwoofers
• You're building a 5.1.2 or 5.1.4 system

Choose the AVR-X4800H ($1,500–$1,875 street) if:

• You have a dedicated theater room exceeding 500 square feet
• Your speakers are power-hungry with sub-88dB sensitivity
• You need Zone 3 for whole-home audio distribution
• You value Japanese manufacturing and long-term reliability
• You're running 7.1.4 at reference levels without external amps

For the majority of home theater builders—those with living room setups, reasonably efficient speakers, and 5.1.4 or smaller configurations—the X3800H represents exceptional value. The price difference literally buys a quality subwoofer that would transform your system's performance far more than 20 extra watts ever could.

Conclusion​

The AVR-X3800H and X4800H share DNA so closely that choosing between them comes down to room size, speaker efficiency, and personal value calculations. Both offer flagship-level features including Auro-3D, IMAX Enhanced, four independent subs, and Dirac Live upgradeability that were premium-tier exclusives just years ago.
For new adopters building a modern Atmos system, the X3800H delivers virtually identical immersive audio performance while freeing $300–$500 for acoustic treatments, better speakers, or a second subwoofer. For dedicated theater enthusiasts with demanding speaker loads and large rooms who want "buy once, peace of mind" quality, the X4800H's Japanese manufacturing and monolithic amplifier design justify its premium—particularly at sale prices below $1,600.
The practical reality from extensive user comparisons: most listeners cannot distinguish these receivers in blind testing. Your speaker choice matters more. Your room acoustics matter more. Your subwoofer matters more. The $800 question isn't really about audibility—it's about build quality confidence and whether your specific use case extracts value from the X4800H's extras.

Spoiler: Claude Web Search

I'll search for detailed information comparing these Denon AV receivers for you.Based on the research, here's a detailed technical comparison of these two models:

Key Differences​

Power & Amplification

• X4800H: 125W/channel (8Ω, 2-ch driven) with monolithic amplifier design featuring individual circuit boards per channel
• X3800H: 105W/channel with standard amplifier design
• The 20W difference equates to less than 1dB, so not hugely significant in isolation

DAC & Processing

• X4800H measured 95dB SINAD vs X3800H's 87dB SINAD
• X4800H includes 32-bit processing (AL32 and HD32) and Clock Jitter Reducer circuitry
• X3800H uses TI DACs (described as "cheap soundbar standard" by some), while X4800H has better quality DACs

Build Quality

• X4800H has metal front panel vs plastic on X3800H, and 2-line FL display vs 1-line
• X4800H is built in Japan
• Better capacitors and power supplies in the 4800H

Connectivity

• X4800H: 7 HDMI inputs, X3800H: 6 HDMI inputs

Pricing (UK)

• X3800H: £999-1099, X4800H: £1599-1799
• Roughly £500-700 difference

The Verdict​

If you're planning to use the internal amplifiers, the X4800H is better value; if using external amps and treating it as a processor, the X3800H may be the better value proposition.

Given your measurement-based approach with REW and interest in audio optimization, the X4800H's better DAC performance and jitter reduction could be worthwhile. However, many reviewers note that in typical listening environments, the differences are subtle rather than transformative.

The most significant real-world benefit is likely the better amplification headroom and cleaner signal path, particularly if you're running demanding speakers or a full Atmos setup without external amplification.

 

[EWL5]

I agree AI based on it's own training data can't give accurate answers to this type of thing and I also propose based on my experience that AI with web search and deep research answers these types of questions a lot better.

These have the same prompt: "Denon 3800H vs Denon 4800H"

I noticed that Perplexity got some things wrong like the 3800H does have 4 independent subwoofers and both the 3800H and 4800H support 5.4.6.

I reckon the Claude Research version is pretty good.

Spoiler: Perplexity Deep Research

Denon AVR-3800H vs Denon AVR-4800H​

The Denon AVR-4800H is the more powerful and feature-rich model, positioned as a step up from the AVR-3800H. Here's a comprehensive comparison:

Power and Amplification​

The AVR-4800H delivers 125 watts per channel (8 ohms, 20Hz-20kHz) compared to the 3800H's 105 watts per channel. More significantly, the 4800H uses a monolithic amplifier design with each amplifier module on a separate board using higher-quality components, whereas the 3800H uses a shared PCB for multiple channels. This architectural difference can result in better dynamics, improved channel separation, and a cleaner sound from the 4800H.crutchfield+2

Processing and Audio Features​

The 4800H features 32-bit processing (AL32 and HD32 processing), providing greater precision in audio signal processing compared to the 3800H's standard processing. Both receivers support the same immersive audio formats—Dolby Atmos, DTS:X, Auro-3D, IMAX Enhanced, and 360 Reality Audio. The 4800H supports 5.4.4 Dolby Atmos setups specifically.homecinemachoice+2

Channel Configuration and Subwoofers​

The 4800H provides four independent subwoofer channels, while the 3800H supports standard subwoofer connectivity. The 3800H can support 5.x.6 and 7.x.4 layouts, whereas the 4800H is optimized for 7.4.4 configurations. Both offer 9 channels of internal amplification with processing capability up to 11.4 channels.reddit+3

Video Connectivity​

The 4800H has 7 HDMI inputs versus the 3800H's 6 inputs. Both feature HDMI 2.1 with 8K/60Hz and 4K/120Hz support, though the 4800H has a front HDMI port while the 3800H does not.prohifi+1

Build Quality​

The 4800H includes a metal front panel and is manufactured in Japan, offering a more robust build compared to the 3800H.simplehomecinema+1

Practical Sound Performance​

In real-world usage, the acoustic difference may be subtle for casual listening. However, the 4800H's superior amplifier design becomes more noticeable when driving height channels or when demanding clarity and channel separation, particularly if you're sensitive to transient detail and low-frequency dynamics.reddit+1

Value Proposition​

The 3800H offers better value if you plan to use external amplifiers and treat the receiver primarily as a processor. The 4800H delivers superior value if you'll rely on internal amplification, especially for complete speaker configurations that utilize all nine channels. Given that the 4800H inherits the amplifier design from the flagship X6700H, it represents notably better sonic performance than the 3800H if you can justify the price difference.simplehomecinema

1. https://www.crutchfield.com/p_033AVX3800/Denon-AVR-X3800H.html
2. https://hometheaterhifi.com/reviews...eceivers/denon-avr-x4800h-av-receiver-review/
3. https://simplehomecinema.com/2023/02/06/denon-x3800h-versus-denon-x4800h/
4. https://www.homecinemachoice.com/content/denon-avr-x4800h-av-receiver-review
5. https://prohifi.in/blogs/news/denon-avr-x3800h-vs-denon-avc-x4800h-a-detailed-comparison
6. https://www.reddit.com/r/hometheater/comments/zfva1i/need_advice_denon_avcx3800h_vs_4800
7. https://www.whathifi.com/reviews/denon-avc-x3800h
8. https://petertyson.co.uk/denon-avc-x4800h-9-4-ch-8k-av-amplifier
9. https://audiot.co.uk/p-31038-denon-avc-x3800h-av-receiver-denon-audio-t.aspx
10. http://www.sevenoakssoundandvision.co.uk/p-55775-denon-avc-x3800h-av-amplifier.aspx

Spoiler: Claude Research

Denon X3800H vs X4800H: A $800 decision with diminishing returns​

The AVR-X3800H delivers 95% of the X4800H's performance at 68% of the price, making it the smarter choice for most home theater enthusiasts. Both receivers share identical DSP processing, room correction, and feature sets—the X4800H's premium buys you marginally more power, a monolithic amplifier design, Japanese manufacturing, and Zone 3 support. For typical living rooms with efficient speakers, these differences are inaudible; for dedicated theaters with demanding speakers, the X4800H's extras become meaningful.

Core specifications reveal more similarities than differences​

Both receivers are 9.4-channel designs with identical 11.4-channel processing capability (requiring external amplification for the extra two channels). They share the same Analog Devices ADSP-21593 dual-SHARC+ DSP chip, Texas Instruments PCM5102A DACs, and comprehensive format support including Dolby Atmos, DTS:X Pro, IMAX Enhanced, and Auro-3D.

Specification	AVR-X3800H	AVR-X4800H
Power (8Ω, 2ch driven)	105W @ 0.08% THD	125W @ 0.05% THD
Power (6Ω, 1ch driven)	180W	165W
HDMI Inputs (all 2.1)	6	7
HDMI Outputs	3 (2×8K, 1×4K Zone)	3 (2×8K, 1×4K Zone)
Zone Support	Zone 2	Zone 2 + Zone 3
12V Triggers	1	3
Weight	27.6 lbs	29.1 lbs
MSRP	$1,699	$2,499
Street Price (Dec 2025)	$999–$1,459	$1,500–$1,875

The 20W power difference translates to roughly 1.2dB—barely perceptible even under ideal laboratory conditions. Both receivers handle 8K/60Hz and 4K/120Hz passthrough, VRR, ALLM, and eARC identically through their HDMI 2.1 implementations.

The X4800H's premium amplifier design matters—sometimes​

The most significant engineering difference lies in amplifier topology. The X4800H uses a monolithic constructioninherited from the flagship X6700H, with each amplifier channel on its own circuit board. This reduces crosstalk and improves channel separation during demanding multi-channel passages. The X3800H uses a more conventional shared-PCB design.
In practice, AVS Forum users who've compared both units report "no audible difference" in typical home theater use. The monolithic advantage emerges only when simultaneously driving all nine channels at high volumes with low-sensitivity speakers—a scenario most users never encounter. If you're running a 5.1.4 system with efficient Klipsch or JBL speakers in a medium-sized room, this difference evaporates entirely.
The X4800H also includes AL32 Processing (32-bit digital extension) and a Clock Jitter Reducer for improved digital precision. While technically measurable, these refinements fall well below audibility thresholds—speaker distortion at 0.1%+ dwarfs any DAC-level differences in the 0.004% range.

Room correction and immersive audio are identical​

Both receivers include Audyssey MultEQ XT32, Denon's full-featured room correction with Dynamic EQ, Dynamic Volume, and Sub EQ HT for independent calibration of up to four subwoofers. The $19.99 MultEQ Editor app unlocks the same advanced tuning on both models. Crucially, both support the optional Dirac Live upgrade ($349 for full bandwidth), giving serious users access to industry-leading room correction.
Four independent subwoofer outputs with individual delay, trim, and EQ represent a standout feature on both receivers—rare at this price point and essential for distributed bass array setups. Format support is comprehensive:

• Dolby Atmos up to 7.1.4 (internal) or via external amps
• DTS:X Pro with Neural:X upmixing
• IMAX Enhanced certification
• Auro-3D with Auro-Matic upmixer (built-in, not an upgrade)
• 360 Reality Audio and MPEG-H passthrough

Build quality and manufacturing origin diverge sharply​

The X4800H is manufactured at Denon's Shirakawa Audio Works in Fukushima, Japan—the same facility producing the flagship AVR-A1H. The X3800H is built in Vietnam. This distinction carries real implications: Japanese manufacturing historically correlates with tighter component tolerances, better quality control, and perceived long-term reliability.
Physically, the X4800H features a metal front panel versus the X3800H's plastic, along with a 2-line display (versus 1-line) and additional 12V triggers for custom installations. The X4800H weighs approximately 1.5 lbs more, reflecting its beefier power supply and discrete amplifier boards. Both share aluminum heatsinks and identical 1080p on-screen GUIs—Denon's best-in-class interface.
Neither receiver runs cool under load. Adequate ventilation with 4+ inches of clearance above the unit is essential, particularly for the X4800H during sustained high-volume operation.

Gaming and HDMI 2.1 performance match perfectly​

For console gamers with PS5 or Xbox Series X, both receivers deliver identical performance. Full HDMI 2.1 support on all inputs includes:

• 4K/120Hz passthrough at 4:4:4 (40 Gbps bandwidth)
• VRR (Variable Refresh Rate) for tear-free gaming
• ALLM (Auto Low Latency Mode) for automatic game mode switching
• 8K/60Hz passthrough and upscaling
• HDR10, HDR10+, Dolby Vision, and HLG

Input lag is imperceptible on both. PC gamers should note that 4K/144Hz requires direct TV connection—both receivers cap at 120Hz. Early HDMI handshake issues reported on 2022-2023 firmware have been largely resolved through updates, though proper certified HDMI 2.1 cables remain essential.

Value analysis reveals clear use-case winners​

The $800 MSRP gap (often $300–$500 at street prices) must justify tangible benefits. Here's how the decision breaks down:
Choose the AVR-X3800H ($999–$1,459 street) if:

• Your room is under 400 square feet
• Your speakers measure 88dB sensitivity or higher
• You plan to add external amplification later
• You want to redirect savings toward better speakers or subwoofers
• You're building a 5.1.2 or 5.1.4 system

Choose the AVR-X4800H ($1,500–$1,875 street) if:

• You have a dedicated theater room exceeding 500 square feet
• Your speakers are power-hungry with sub-88dB sensitivity
• You need Zone 3 for whole-home audio distribution
• You value Japanese manufacturing and long-term reliability
• You're running 7.1.4 at reference levels without external amps

For the majority of home theater builders—those with living room setups, reasonably efficient speakers, and 5.1.4 or smaller configurations—the X3800H represents exceptional value. The price difference literally buys a quality subwoofer that would transform your system's performance far more than 20 extra watts ever could.

Conclusion​

The AVR-X3800H and X4800H share DNA so closely that choosing between them comes down to room size, speaker efficiency, and personal value calculations. Both offer flagship-level features including Auro-3D, IMAX Enhanced, four independent subs, and Dirac Live upgradeability that were premium-tier exclusives just years ago.
For new adopters building a modern Atmos system, the X3800H delivers virtually identical immersive audio performance while freeing $300–$500 for acoustic treatments, better speakers, or a second subwoofer. For dedicated theater enthusiasts with demanding speaker loads and large rooms who want "buy once, peace of mind" quality, the X4800H's Japanese manufacturing and monolithic amplifier design justify its premium—particularly at sale prices below $1,600.
The practical reality from extensive user comparisons: most listeners cannot distinguish these receivers in blind testing. Your speaker choice matters more. Your room acoustics matter more. Your subwoofer matters more. The $800 question isn't really about audibility—it's about build quality confidence and whether your specific use case extracts value from the X4800H's extras.

Spoiler: Claude Web Search

I'll search for detailed information comparing these Denon AV receivers for you.Based on the research, here's a detailed technical comparison of these two models:

Key Differences​

Power & Amplification

• X4800H: 125W/channel (8Ω, 2-ch driven) with monolithic amplifier design featuring individual circuit boards per channel
• X3800H: 105W/channel with standard amplifier design
• The 20W difference equates to less than 1dB, so not hugely significant in isolation

DAC & Processing

• X4800H measured 95dB SINAD vs X3800H's 87dB SINAD
• X4800H includes 32-bit processing (AL32 and HD32) and Clock Jitter Reducer circuitry
• X3800H uses TI DACs (described as "cheap soundbar standard" by some), while X4800H has better quality DACs

Build Quality

• X4800H has metal front panel vs plastic on X3800H, and 2-line FL display vs 1-line
• X4800H is built in Japan
• Better capacitors and power supplies in the 4800H

Connectivity

• X4800H: 7 HDMI inputs, X3800H: 6 HDMI inputs

Pricing (UK)

• X3800H: £999-1099, X4800H: £1599-1799
• Roughly £500-700 difference

The Verdict​

If you're planning to use the internal amplifiers, the X4800H is better value; if using external amps and treating it as a processor, the X3800H may be the better value proposition.

Given your measurement-based approach with REW and interest in audio optimization, the X4800H's better DAC performance and jitter reduction could be worthwhile. However, many reviewers note that in typical listening environments, the differences are subtle rather than transformative.

The most significant real-world benefit is likely the better amplification headroom and cleaner signal path, particularly if you're running demanding speakers or a full Atmos setup without external amplification.

I wonder what AI's opinion on SINAD vs incremental cost is?

 

[ban25]

Sorry to reopen this thread. Many people say there will be no audible difference between these two AVRs, but others have pointed out that in Amir’s SINAD measurements the X4800H scored better. He also recommended the X4800H instead of the X3800H.

Since my one week old X3800H is showing some HDMI issues, I can exchange it for an open box X4800H for an additional 380 euro.

Assuming both units work as intended, would the 380 euro be a good investment for music and home theater? I am using Fosi V3 mono amps for the front channels and a 5.1 setup.

Someone on AVS Forum mentioned the following:

Here are the key reasons to pick the X4800H over the X3800H:

1. Better Audio Performance

• More Powerful Amplification: The X4800Hdelivers 125W per channel (8Ω, 2-ch driven)versus 105W per channel in the X3800H, providing more headroom for demanding speakers.
• Upgraded Internal Components: The X4800H has higher-quality capacitors and power supplies, leading to better overall sound clarity and dynamics.

2. Build Quality and Chassis Design

• The X4800H uses a monolithic amplifier design, which typically results in better power efficiency and stability.
• Heavier and better-built chassis for reduced vibrations and enhanced durability.

3. Enhanced Processing and DACs

• The X4800H features better 32-bit DACs (Digital-to-Analog Converters), contributing to improved audio fidelity, especially for Hi-Res music and surround sound processing.

4. More Multizone and Custom Installation Features

• The X4800H has an extra HDMI output (3 total vs. 2 on the X3800H), which is useful for multi-zone setups.
• More advanced custom integration support for home automation systems.

5. IMAX Enhanced Certification

• The X4800H has IMAX Enhanced support, which is missing from the X3800H. This can provide a better movie-watching experience with supported content.

6. Slightly Better Preamp Mode

• While both models support Preamp Mode, the X4800H has better power supply components, potentially making it a stronger choice for users who plan to use external amplifiers.

There's no audible difference between the two. What's the warranty on the open box unit? If it's less than the 3 year factory warranty from Denon, I would choose the 3800 for sure.