Rusty Messages: 1190 Registered: May 2018 Location: Kansas City Missouri
Illuminati (3rd Degree)
Depends on the tubes and how many. If you have an amp with 300b tubes, it will cost hundreds of dollars to replace. Thousands even if you were nuts enough to want vintage NOS Western Electric tubes. I have two mono OTL amps with 16 output tubes for each amp. If I were to had used domestic suppliers for the Russian triodes to replace. It would have cost hundreds of dollars to replace. But a mother Russia source allowed me to get tubes to replace all twice over with spares for a little over a hundred bucks. Just look at some of the tube suppliers around the net to get a handle on cost for what ever amp you'd have interest in.