Dennis Had Inspire Amps

[Breakdown7]

Sure, I’m happy to measure my 300B-v…
Depth from speaker terminals to the end of the gain knob is 10.5”. The width is 10.25”. The height to the top of the Western Electric tubes is 8.5”. My unit is on the top shelf, so I wouldn’t know about how much space would be needed above the tubes for ventilation. They do run quite hot, so I would keep that in mind. How much space needed over top of the 300B tubes would probably be a great question for Analog Addict.