Rowland model 12's still reliable?

I'd be running it behind a Power Plant Premier. Do youthinkthat would make a difference?

French_fries was there any recall of units? How would you assure that unit has new PS design vs. old?

IMO the amp should work properly plugged directly into the wall. the manual states as much. As for using PS Audio, due to proprietary technology you should contact JRDFG before using a power-regeneration device. if you need confirmation of the modified units you can call JRDG with your two serial #'s.
BTW, i only had problems with one channel; the other one worked as new but both were sent back anyway. the amplifier units weren't touched since they
weren't affected. i even held onto them just in case i need a back-up unit.