Adcom GFA-555 Amplifer

Excellent condition Adcom GFA-555 amplifier. 200 Watts per channel. Works perfectly. 
From the original Stereophile review: "The GFA-555 does everything well, and most things exceptionally well. It provides superb, well-controlled bass with far better speaker load tolerance than most amps. Its midrange and treble are remarkably low in coloration. There is no hint of hardness, and none of the loss of inner detail common to transistor amplifiers.
With the exception of the Krells, I have never heard a more detailed, natural, and extended upper four octaves in a transistor amp. The Adcom may even be a legitimate rival to the Krell; it's brighter and more dynamic; and somewhat more open. And, like the Krell, it gives the impression, on really good material, that the amplifier simply isn't there. Nor is the Adcom romantic or sweet, like New York Audio's new Moscodes. Rather, it offers natural upper-octave detail that the latter miss. Other amplifiers have similar upper-octave performance, but I unhesitatingly recommend the Mcom over the very stiff competition from Tandberg and Threshold.
The Adcom's soundstage is sufficiently superior that even those who claim all power amplifiers sound alike might hear the difference. It comes very close to the better tube power amplifiers in providing detailed, stable, realistic imaging with natural depth. It is not an Audio Research D-250, but is extraordinarily holographic—I suspect almost embarrassingly so. This kind of soundstage has previously cost at least $2000."