Yeah, I doubt anyone could hear it. Last time I checked with accurate speakers and sine waves and calibrated mic, I could hear up to around 18kHz, It's probably a bit worse now. 20kHz is considered around the maximum threshold for younger people. So considering the ZA3 without PFFB at worst with 8 Ohm speakers only has a fairly linear 1dB rise between 5-20kHz (peaking way out of human hearing and recording range around +2.5dB @ 45kHz) and the threshold for hearing a variation in volume is around 3dB I doubt it will make a noticeable difference for most of us unless you have golden ears or are a bat.
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Fosi Audio ZA3 Amplifier Review
- Thread starter amirm
- Start date
Have you tried your ZA3s with RCA instead of XLR? Using single-ended input on the ZA3 will bypass an extra op-amp (the one that is used to downconvert balanced input signals to single-ended in order to push the signal through the volume potentiometer that cannot be bypassed).
V3 Mono is the opposite, the extra op-amp upconverts single-ended input to balanced because the V3 Mono is internally balanced differential, so the input signal cannot just be single-ended. Using XLR with a true balanced differential signal on V3 Mono avoids the extra op-amp.
-Ed
I am using geshelli akm4499 with 2 V7 vivid on xlr, I have to place 1 V7 on rca but I am afraid that will not be better from several videos that I sow on you tube everyone recomended XLR
I am looking to this 48v power supply but have a weird output connection with 4 pins is made for medical equipment any idea what kind of adapter can be used?
Mean Well Medical 48V Power Supply GSM220A48 GSM220A48-R7B
One of these. Don't know whether the center pin of the receptacle in the amp is 2.1 mm (P1J) or 2.5 mm (P1M).
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Hello FMs,
I just registered to ask some, maybe newbee, questions.
I wonder since a 48V5A PS consumes 240 Watts - how can an amplifier then deliver two times 180 Watts (each cannel) by only receiving 240 Watts from the Power Supply?
(this is related to the above referenced spec table)
(Edit: cutted out off topic question)
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handyrandyrc
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I replaced a dysfunctional Denon AVR with a ZA3 this week. Running Pioneer SP-BS22-LR speakers. Sub out to an RSL Speedwoofer 10E. Plenty, plenty, plenty is all I can say.
wineaholic
Member
I have seen a youtube video where it is claimed that this product is not good because the low frequencies are not cut by the main speakers when a subwoofer is connected. What do you think?
Which stereo power amp have had a high pass crossover in the last 50 years?
Are you serious?
Selkirks
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I have been using the ZA3 daily for over a year without issue. After problems with the Topping PA5 and LA90 I wasn't expecting much. No complaints with the product so far and it sits hidden out of sight, unlike the big glowing McIntosh MA-8000 it replaced.
handyrandyrc
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Too many Youtubers with opinions... If we ran them as a stereo pair, they'd play full-spectrum. They sound great that way. I added a sub. Does this sound great to me? Also, yes. Could these Pioneers play more cleanly without the lower octaves? Suuure, maybe so? I just like music. And I like a great deal. The science says the ZA3 measures pretty decent to be a budget buy. I'm happy. And I'm not even using a balanced connection (for shame!)
As a example I have a fancy ASUS gaming motherboard with fancy audio chips and I got a DAC and a headphone amp and other than it going louder I noticed no difference in sound. If you want a DAC there are solutions from about $80 and up for a good DAC.
As long as you’re not hearing noises or a high noise floor, you’re fine. I remember years ago hearing all sorts of noise and artifacts from my PC sound card, as if poorly grounded or something.
Sound Blaster 16 Pro!
-Ed
The newer model is better, newer and available. Recently reviewed here @ ASR. Very good review and the price is great.
SMSL PS200 Budget DAC Review
This is a review and measurements of the SMSL PS200 stereo budget DAC. It is on kind loan from a member and costs US $89.99. The unit comes in a lightweight plastic package which allows my rather stiff RCA test cables to yank on it. A simple toggle switch changes inputs. There is an indicator...
www.audiosciencereview.com
TheRealLGC
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I have a couple of the ZA3s, purchased a few weeks ago. As noted by a prior post, the ZA3s now come with Fosi's 48v 5a, GAN power adapter.
Also, I noticed on the Fosi Audio website, that some customers were using the 48v 10a, GAN adapter, in a 1:1 relationship, with the ZA3s set to mono. I found the Aiyima equivalent for much less on Amazon. In an A/B testing (with my Wiim Ultra set to mono), there's a noted (for my tastes) improvement, in increased note weight, when comparing one mono with the 48v 10a & the other ZA3 mono using the Fosi 48v 5a GAN adapter.
I don't have a Fosi 10a to compare with, but I can say that the Aiyima adapter does not require a filter; it's dead silent, between songs.
Also, I noticed on the Fosi Audio website, that some customers were using the 48v 10a, GAN adapter, in a 1:1 relationship, with the ZA3s set to mono. I found the Aiyima equivalent for much less on Amazon. In an A/B testing (with my Wiim Ultra set to mono), there's a noted (for my tastes) improvement, in increased note weight, when comparing one mono with the 48v 10a & the other ZA3 mono using the Fosi 48v 5a GAN adapter.
I don't have a Fosi 10a to compare with, but I can say that the Aiyima adapter does not require a filter; it's dead silent, between songs.
Hello there,
can someone tell me if the Fosi ZA3 is an improvement against my current setup?
Current setup is Project-Audio DS2 Amp Box -> Polk ES60
I use the Power Amp for Music (Wiim Ultra) and on the Front PreOuts from the Marantz Cinema 70s for Movies. I think the Project-Audio Speaker Noiselevel is kinda extreme. So compared with each other, would be the Fosi ZA3 better as the Project-Audio DS2 Amp Box Noiselevel- and Powerwise?
Sorry for my bad english
can someone tell me if the Fosi ZA3 is an improvement against my current setup?
Current setup is Project-Audio DS2 Amp Box -> Polk ES60
I use the Power Amp for Music (Wiim Ultra) and on the Front PreOuts from the Marantz Cinema 70s for Movies. I think the Project-Audio Speaker Noiselevel is kinda extreme. So compared with each other, would be the Fosi ZA3 better as the Project-Audio DS2 Amp Box Noiselevel- and Powerwise?
Sorry for my bad english
robertospeed
Active Member
Fosi Audio ZA3 TPA3255 (Unboxing / Functions / Sound)
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