I had a 2-channel Pyramid amp a few years ago, and I was completely dumbfounded by the lack of features.
The amp could not be bridged. Terminals were Molex with wires hanging off. Thumped on turn on/off. External fuse was inline, and soldered to the board.
All the stuff you would expect an amp to have, it failed miserably. I took it apart and used the heat sink for a silent PC build. Otherwise, it was utterly useless.
Also, the fusing is 40 amp... and for a Class A/B amp, means you will get about 250 wRMS total... or around 60 watts per channel. AND YOU CAN'T BRIDGE IT. Get a used mid-level amp, and you'll be MUCH happier.