I own an SA-7S1 and have heard several modded versions. All I can say is, just be careful. Theres absolutely nothing wrong with modding, and I support it in many cases, but IMO the Marantz 7 and 11 are such wonderfully balanced players that the wrong mods can actually hurt rather than help. The modded players Ive heard definitely CHANGE the soundno doubt about itbut whether that change is a good thing or not is open only to the listener. I personally didnt care for any of the modded units, and Im keeping mine stock until I hear a mod that unequivocally IMPROVES the sound in ALL parameters. Just my opinion, of course. YMMV.