Cypher Labs Duet Amp

I'm looking for raw accuracy with a new headphone amp. The Topping A90 is a bit warm sounding. The 789 has been called a "Wire with Gain" which is one of the highest, if not the highest praise you could give to an amplifier. I have heard and owned TAD Labs components which are significantly more costly, but fit this description exactly. There are no frequency changes when you turn up the volume. There is just raw authenticity and sonic accuracy. Sometimes a track will sound terrible so I personally remaster it. Now, for just $250 I'm not expecting the same level of performance. But could someone please provide a detailed description of how this amplifier performs - and more specifically; what it does well / could improve on? This appears to be a very impressive offering from DROP THX. I'm super-excited to hear back though not in a rush. I appreciate your feedback. :)

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