Thanks for the link!

The section about heat and ventilation doesn't seem to clearly state whether it's OK to stack these amplifiers up or not. It suggests one can (by talking about not putting things in the middle of a stack), and indicates there's ventilation from the bottom, which suggests the feet are high enough to provide sufficient ventilation between multiple amps in a stack. Sound right?

The specs page on the main website says that there are two RCA input jacks, but the diagram of the rear panel on page 4 of the manual shows only a single input. On a possibly related note, the manual makes no mention of bridging two amps together. I take it this feature got dropped?