I've had the amp apart a few times and put thin felt padding to areas on the chassis where they come into contact with the rear panel & also up the top when the chassis meets the top of the cab. One quick thing to mention that I did get a bit of vibration noise that came from the rear of the amp. It...
Welcome to the forum dido_15 and BrotherJ. :Thumbs Those diodes circled in the picture are indeed the bridge rectifier which converts the AC filament supply to DC for the preamp valves to minimise any hum pick up. Cheers for the welcome Steve! I didn't think the Class 5 would have used clipping dio...