The sound is not particularly warm. The amp uses global feedback to achieve neutral response across any load, much like PFFB on TPA3255-based amps. There are two reconstruction filters to choose from, the standard Filter 1 which, according to some, might be warmer than neutral, likely due mild roll-off in the very high frequencies. Just use Filter 2 for a proper neutral response (if the difference is even perceptible by the listening individual).
Well. When buying it. I heard it against an eversolo amp. And of those two, the Marantz sounded a bit more warm and full bodied then the eversolo. That was at least in my ears. And others might hear it different.
When not driven into distortion, all amplifliers sound the same. The warm Marantz sound is a myth.
Which Eversolo amp? It might not have PFFB, so depending on the attached speakers, it may or may not have rolled off or exaggerated high frequencies, compared to the neutral M1.
It was an eversolo play.
Eversolo Play does not have PFFB. It is load-dependent for frequency response.
If we assume it behaves like the AMP F2, you are talking about maybe +0.3 dB at 10kHz? I don't think anyone would detect that
I don't disagree with you; I am simply trying to rationalize why the other poster, "heard a difference."
According to Erin's review and measurements of the Eversolo Play, the load dependency of the frequency response is pretty bad.
I would be willing to say that if comparing speakers similar to the referenced Buchardts on the M1 versus the Eversolo Play, it is definitely possible to feel as though the Marantz is warmer.
Highly unlikely unless played in a very large room/listened to from very far away/played extremely loudly.
I'm not saying I have the answer why. It might be placebo.
This is a good read on the subject. From page 80 and onwards
This might be a novive question. But if it's not merely an amp. What is it?
www.hifinews.com
www.hifinews.com
I read that review to. Would you say it's safe to assume that it can deliver the 100w down to 2 ohm where it will start protecting itself ?Not sure if it was previously posted/linked yet, but apparently HiFiNews did take objective measurements of the amp, proving that global feedback is working and achieves audibly neutral frequency response from 20-20,000Hz regardless of speaker load, although it starts going into protection at/below 2ohms.
SINAD at 1KHz is within range of WiiM VibeLink and Fosi V3 Mono. This is the highest performance from a pure digital (PCM -> PWM, zero analog stage) consumer-level amplifier, not to mention the load-independent frequency response.
While one could argue that this is an expensive amp for the performance and power output, remember that it includes bass management, DIRAC Live integration, and ARC input with Dolby Digital+ downmixing including virtual surround, speech enhancement, and dynamic range compression for late night movie watching. It’s not meant to compete directly with pure stereo or monobloc power amplifiers; it’s meant to be a one-box-to-do-it-all solution for people happy to use only a 2.0 or 2.1 setup for both music and movies. From that standpoint, it outperforms a LOT of alternatives for equal or significantly more money even once DIRAC Live license cost is factored in.
Marantz Model M1 Lab Report
Initially tested via its line inputs, which appear to be sampled at 96kHz, the Axign/TI-based digital Class D amplifier solution matches the M1's 100W specification by delivering a maximum continuous 113W into both 8 and 4ohm loads, with 113W and 145W into 8 and 4ohm under dynamic conditions...
EDIT—Link to first page of article:
Marantz Model M1
With HEOS built-in, and support for numerous streaming services, Marantz's bijou Model M1 network-attached amplifier pulls off a blend of minimalism with supreme flexibility To some readers, the Model M1 might appear an unusual product to carry the Marantz moniker. After all, for the last few...
-Ed
Seems like it. I have no way to test it and my speakers are nominal 8ohm, 6ohm minimal, so I don’t come anywhere close to the limits.
