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Tube amp, Blocking DC?

post #1 of 4
Thread Starter 

I was PM-ing with another member about an OTL tube amp whos builder claims he does not use output / coupling capacitors.  That got me scratching my head, because I am not familiar with any commercial tube amp that does not use capacitors on the outputs.  What other ways are there to block DC... besides coupling capacitors and output transformers?

 

Thanks!!

post #2 of 4

bipolar supplies, DC servo - no blocking needed

post #3 of 4

and it had better have a very fast safety circuit.

 

my bamaslama and my mig amp have dc coupled outputs and

are tubes, and tube hybrid

 

megatron is all tubes and dc coupled electrostatic, so is es1 and es2

post #4 of 4

To add to the list: 

Berning micro-ZOTL

 

Not *exactly* headphoneish, but the Transcendent circuit is also OTL without output cap. 

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