I agree with surroundophile. I owned a GFP-565 preamp and a pair of GFA-565 monoblocks for about 14 years. During that time I auditioned newer stereo-only components from Adcom and other makers such as Rotel, NAD, etc. At their price-point I found nothing to compare. I use an Adcom GTP-502 preamp/tuner and GFA 5002 amp in my office and it works just fine for me.

I personally like their older amps (535, 545, 555, 565 and 585) better than their newer amps with the exception of the 5002 and 5006. Their HT pre/pro's have been plagued with many problems and have not received very good reviews in either magazines or more importantly from users. IMO.