Need Audio Tech who knows tubes - Chicago area


Hello Friends - I own a Kondo Japan KSL Neiro 2A3 amp. An output tube recently went out and I will replace all four tubes. I've done some research and will probably purchase Emission Labs tubes. I have learned they need to be very finely matched to meet the needs of this particular amplifier. The tube matching is done by the EL by "gridding to the heater voltage" of the amp. Can anyone recommend a Chicago area audio technician/service proficient with SET tube amplifiers who can measure the heater voltage of my amplifier? I live in the Chicago northern suburbs. Thank you.
fineito

Showing 1 response by fineito

Many thanks to all of you that responded with leads. First, it appears to have been a bad driver tube on the amp causing the problems. I will replace all four 2A3 tubes with new EML solid plates as I do think one of the Full Music tubes I had been using failed or is failing. The local leads that you all suggested led me to Deltronics, Chicago and to members of the Antique Radio Club of Illinois. I will use a person from ARCI to do the measurements needed as the Kondo is a parallel SET with no feedback (as I understand) and the tubes apparently need to be finely matched. Many thanks, again, to all that responded.