johndyson

Responses from johndyson

VSi60 Bias Adjustment
John Rutan at Audio Connection replaced the resistor and as one of the 6550 tubes was bad he switched the tubes to the KT120's that I had.   John also said that I should  to replace the 6H30 tubes because they were tired.The repair was fine but I... 
VSi60 Bias Adjustment
Thanks for the response.   It's good to figure out what is going on.    I bought the amp used on Audiogon and it came with 6550 and KT-120 tubes.   I don't know how many hours are on them.