I finished building a SE tube amplifier after dropping the hobby 35 years ago.
I use this PCB bought from ebay:
1pc Single Ended Tube Amplifier Bare DIY PCB FOR EL34 KT88 6L6GC FU7 FU50 6550 | eBay
The PCB is isolated from the chassis. The only connection between PCB and chassis is the input signal ground connected to chassis safety earth. No hum what so ever and I'm happy with the outcome.
I use a switch to switch the EL34 between triode and pentode mode. It seems to me that triode mode is louder while pentode mode is softer.
Any comment?
I use this PCB bought from ebay:
1pc Single Ended Tube Amplifier Bare DIY PCB FOR EL34 KT88 6L6GC FU7 FU50 6550 | eBay
The PCB is isolated from the chassis. The only connection between PCB and chassis is the input signal ground connected to chassis safety earth. No hum what so ever and I'm happy with the outcome.
I use a switch to switch the EL34 between triode and pentode mode. It seems to me that triode mode is louder while pentode mode is softer.
Any comment?