Like a lot of people, I owned one of these for years and they were a great buy used but there is so much better equipment on the market for the same price now.
New Adcom GFA-555 se - Special Edition
Adcom is making a new version of the GFA-555 II, the GFA-555 se. This amplifier is essentially the GFA-555 II with slight improvements including balanced inputs larger capacitors resulting in a better soundstage and an even higher damping factor. Did you know that the GFA-555 is likely the best selling piece of hi-fi equipment ever made, with a build of over 100,000 units? The GFA-555se will be available sometime in November.