I have nothing but good things to say about this amp, it's really phenomenal.
The nutubes give it a graceful and liquid effortless sound. But not dull or hazzy, at all. Very clear, excellent resolution and detail.
It's in perfect cosmetic and working condition, no issues.
(with the high gain mode, this can drive headphones like the he6, it actually has tingled more ears from the bass, it has the power, so this can do anything from hd800, utopia, he6 or whatever)