This amp is a couple years old in excellent excellent shape with original box and manuals. I searched all over and even E-Bay but can't find any current pricing.
I looked that one up. It's only 125Wx4 at 4 Ohms and the Discus series A/B. It isn't a mono block amp or remotely like the QAA. This one is 250Wx4 at 4 Ohms... totally different connections and digital setup.