presently using Adcom's GTP-760 pre/pro and GFA-7000 amp..have not been very happy with this system..had to have the amp repaired early on and I am living with a DVD dig audio coax input that does not work (use dig 2 for the DVD). Have I had bad luck..any input on Adcom out there...considering 950/770 as replacement system and step up to 7.1