VH4S tubes, preamp tubes

marek

New member
Hello everyone!
I´m going to change power tubes on my VH4S from TAD EL34B-STR to JJ KT77.
My question is - In which position should I left the EL34/6L6 switch? My guess is in EL34.

I´m experimenting with preamp tubes as well. It is worth it to get paired tubes for V6-V7 and V8-V9?
My current preamp setup is V1 and V3 - TAD 7025 HG and rest is China 12AX7B.

I´m looking forward to hear KT77 for the first time in my amp. :)
 
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