1970s Mitchell Pro-100 Vintage 100 Watt Tube Guitar 1x12 Combo Amp,exact schematic to Boogie Mark I,built in 1977.This was built by the same guy who put out " how to service your own tube amp" book and video back in the 80's.Tom Mitchell.CASTERS WILL BE REMOVED FOR SHIPPING.THIS AMP IS HEAVY,BUILT LIKE A TANK.