Pros: Natural balanced overall presentation, deep rich vocals, nice soundstage, good dynamics, solid build, very silent background, no hum.
Cons: Slightly too rounded treble, a bit to loose in bass control with bassy headphones.
Very nice amplifier. Very solid build. Love vocal presentation and rich lower mids. Helps to achieve warm signature with technical headphones like T70 (even with such effective headphones there is no hum..). Perfect partner for HD650. Works good with K701. 3 pairs of inputs make it very versatile machine. Price is rather attractive (about 160 Euro) for the unit made and designed in EU - bergain. Equipped with 4 x SOVTEK tubes.