I created this case for an amplifier board that I purchased from ebay. Saved a bit and gave me an excuse to make something. It is the board from a Muse SA-50 T-Amp Digital audio amp (shown above). I purchased it from here: http://www.ebay.com/itm/221851679894 or just search. Instructions: Print one of each STL, and two of the small knobs. I printed in ABS @ .21 LH, 20% infill. I used a .35 nozzle. The 3 mm Screws will self-tap. ABS is recommended. Need well-calibrated printer for minimal/no cleaning or drilling. Used old POT heated with torch to around 550 deg F to make groves in volume, bass/treble knobs. I used banana connectors I had on hand for the speaker connections. I also had to find nuts for the pots because it didn't come with any. Printed on a MendelMax 1.5.