I found no discussion about this subject and I decided to start a new topic.
This week my long awaited HM-801 has arrived to me and curious about the amplifier module he was using, I found this one:
Interestingly, this unit comes with a second amplifier module inside his box, similar to the first one, inside a plastic bag. And I've never seen this amp before. Does anyone know anything about it?
Now the problem: I'm not pleased about the SQ of the unit. This lose to my old HM-601. What I'm finding is a very bright and detailed sound, but with a soundstage limited to the sides of my head, a very bad musical image, little or no separation between the instruments and poor aeration, the exact opposite of all the qualities of HM-601, which is the accurate musical image construction (very 3D), with plenty of aeration and soundstage
Does the poor sound quality is because of these unknown amplifier modules?