“I'm using the 5670/6DJ8 tube socket adapter available on-line. It did not require any circuit modifications...”
This is just a curiosity question. Is the adapter just “adapting” the pin outs or also compensating for the differences between the two tubes’ electrical characteristics? According to the tubes’ data sheets, there are some differences between their characteristics that could theoretically result in different sonics but that could be at the expense of stressing other components in the circuit, or the tube itself. I’ve heard of anecdotal examples where folks have used a “wrong” tube but liked the sonics results better.
This is just a curiosity question. Is the adapter just “adapting” the pin outs or also compensating for the differences between the two tubes’ electrical characteristics? According to the tubes’ data sheets, there are some differences between their characteristics that could theoretically result in different sonics but that could be at the expense of stressing other components in the circuit, or the tube itself. I’ve heard of anecdotal examples where folks have used a “wrong” tube but liked the sonics results better.