Here is DeForest's personal Hiwatt Combo Amplifier. Made in the UK by Dave Reeves Hylight Electronics, the original creators HiWatt amplifiers. This is from The Who Era! It is a bit scuffed up here and there but in excellent shape with no issues.
This one was made while Pete Townshend was playing them. It has a 12 inch Weber Alnico speaker that sounds great. This amp is well documented on Plexi Palace. Call 619-283-2700 for questions.