I have had this item for a while. It has worked very will for me. I have used it for everything from running my bass preamp through, powering my small PA system, to operating HiFi speakers. You get roughly 125 watts per side. and 250 combined mono. I have a copy of the manual as well. As you can see it is rack mountable. It takes up about three spaces. I also have some car amps that are rated much higher if you would be interested in them as well.
From the photo you can see there are a couple of wiring options.

Knowledge is the result of experience.