It's late, this will be short.
 
Great amp with clean adjustable crossfade, tight crisp bass boost, and the 75ohm option really helps with some phones.  I run buf634 and ad8065 chips for my K702 and hd595s.  Love the sound especially going from the xm4 to this.  Instrumental music is really brought to life, every pluck and kick separate and full.
 
Sadly I fried mine while changing chips when I lived in japan so I never asked James about repairing it.