By rprice , 13 November 2015 Link http://projectrepair.blogspot.sg/2013/08/project-mistral-mm-1-hybrid-tube.html This man purchased a cheap Tube Amp, and rather than simply accept the poor quality, he upgraded the crap out of it with some better components. If you can't open it, you don't own it. Tags audio makers hardware bluetooth battideas stempunks