My dad was kind enough to provide me with a nice db systems amplifier, but the thing didn't have any volume control. I found my source (a PS3) to be lacking in range settings so I needed to come up with some sort of pre-amp. What you see below is the result. Nothing more than a dual potentiometer stuck inside an MDF box, well almost a box, I never built the top or rear of the thing.
I've had a more impressive setup in the works for just about as long which utilizes the PCB for a Joshua Tree Attenuator with a controller of my own design based on an Arduino. Here is a teaser shot of that: