Top 5 headphone amp available. Try HD-600, Audeze LCD-2, HFM 560 with balanced wires. Just special. Total control, big volume, super clean bass that thumps (if it's there).
As an integrated, it's not a muscle amp (I hear it can drive a Magnepan .7) if so, that's the limit. It's fine for an old pair of ProAc Tablettes and Triangle Celius 202's. Clearly can play any speaker with > 90 db SPL (unless the room is a cavern of course).
If you like (or need) the soft haze of tubes (THD), or a more subtle transistor sweetness of say a Pass X Series - then you might not like it. However the bass is very good, and the mids and highs are totally coherent with each other. It never takes a misstep, it's detailed, but not bright. But it doesn't give a holographic view on the sound (width, depth, spatial cues) quite like my Pass X-150 - but, it's a boat load cheaper (at least when new).
Pre-amp: Just getting started - but it lacks width compared to a Pass L, and depth isn't as good - but seriously.
The pre-amp and amp are well matched. The headphone amp is obscene. If you listen to high end cans, but are using some tube in an altoids container or a low piece of Schiit AND need something to drive an average or more efficient speaker - don't buy until you look closely at this.
