john, if you aren't set on buying it right away im going to have mine for sale in a few weeks. i know which one you are looking at on audiogon, and i might be a touch wary. there have been at least 3 generations of this amp, i have the second, i know many people on here have the third, and the one on audiogon is the first (i believe). it is certainly the earliest generation i've seen in a long time. make sure to ask that seller plenty of questions regarding the history of that amp :-)