You could make a SET with an 833A to power a subwoofer with enough power. Use the high voltage transformer output from the power supply of a discarded microwave oven and a full bridge rectifier consisting of four murcury vapour rectifiers. The output transformer might make steel cabinets and desks slide across the floor and you will want to have a well ventilated cabinet that will keep the 2500 volts you will be giving it where it will not be accidently touched. Some people at GR Research built one, but I think they did it to be funny. However it worked.
Personally, I almost became so disappointed with subwoofer amplifiers going bad in a year or less that I almost built such an 833A monstrosity. Fourunately, Audio Express came up with a sensible subwoofer kit that perfectly integrates with my 45 SET amplifiers.
Personally, I almost became so disappointed with subwoofer amplifiers going bad in a year or less that I almost built such an 833A monstrosity. Fourunately, Audio Express came up with a sensible subwoofer kit that perfectly integrates with my 45 SET amplifiers.