I have confirmed that the corner knobs and switches are working. I'm not particular about the sound, so I decided to sell it to raise funds. It's beat up, but the box is included. The box says "eh3003," but the circuit board is "eh1322." I think it's a remnant of the 3rd early Rams board product. The footswitch may have been replaced. To be honest, I don't know much about it, so I apologize.