Sorry to hear Adcom is on it's (sic) last breath. My GTP-500 TPA served me well until I got the 990 and my GFA-535 (smallest Adcom amp at its time and still considered one of the best sounding) was working fine until I got my two nOrh monoblocks back after servicing and may yet work again in surround duty. My relation to them was good. I still wish the 990 had the GTP-500's ability to listen to one source while recording from another, but I don't know of any digital TPA that can do that. Alas.