I have auditioned many and I believe they do but this is one of those questions that is like pouring gasoline on a fire.
I didn't believe some of them do, but for example I compared the CA-M600 with The McIntosh MC601, same B&W 800Diamonds, same room, same chair, same music (SACD), same volume.
Results the Classé CA-M600 was so much more detailed, you could not even hear some of the instruments with the Mc even other untrained ears such as my kids said where is the flute?
It is interesting why their manuals are so poor. We know the gear is all Chinese, and maybe the Chinese manufacturers don't produce manuals at all, leaving it to the end seller to do so. It makes me wonder if Emo actually do understand the technologies they are selling? Certainly they didn't wrt to many of the problems suffered by the UMC-1 and their numerous replies to questions on their own forum so that that is the case. They never, for example, seemed to grasp that the bass management was impossible flawed in hardware. A lack of fundamental understanding like this would result in very brief manuals, covering the really obvious stuff. I hope this aspect of emo performance improves over time.
Of course, writing an amplifier manual is pretty simple - and we can't really fault Emo's amps IMO.