I owned the sa-7/sa-12 combo about 12 years ago. The sa-12 failed twice, bigtime (once taking out a speaker in the process); the sa-7 failed once, but under circumstances that may be understandable. Right out of the box, they sounded great for the money, but long term reliability was a problem even with a manufacturer to complain to. Without one, and buying used, I wouldn't take the chance myself.
Opinions on Counterpoint Amps/Upgrades
Seems there are always reasonably priced Counterpoint amps around. They have their loyal fans, plus extensive updates are available through the original designer. Anybody who has had the SA-20/220 or 400 series or heard them I would be interested in your comments. I can't really afford the current SS Plinius/BAT or tubed VTL/ARC/VAC amps that are usually paired in reviews of my speakers (Alon Vs). Any help appreciated. Thanks!