I've owned this amp for 20 months now and it has been my main amp for all of my non-electrostatic cans. The entire time I have owned this amp I have never once sat back and said to myself, " This is it." I have owned amps that made me instantly smile and tap my foot but this amp never did that. It's a very neutral-sounding amp and it has plenty of power for any headphone I own. It produces a clean sound, and it's dead silent. That said, it's not a "fun" amp for me. I admit to liking a bit of color added. I actually compare the 887 to my old Bryston BHA-1 and in that regard, they perform very much like each other, SQ-wise.
For what it is, and what it does, it's a fine amp at a very fine price point. I'll keep mine and continue to use it but when I want to really enjoy my music, it gets powered down so I can power up one of my other amps.