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Old 16th Jan 2008, 11:50 pm   #8
mastermanx2001
Retired Dormant Member
 
Join Date: Jun 2007
Location: London, UK.
Posts: 366
Default Re: Quad 2 Valve power amp questions

I'm in danger of answering my own question, but it looking like the GE 7518A/KT66 valve is the one to replace the GEC KT66. Audiomm mentions that the heater current is the same for both, but there appears to be comment on the internet that the 7581A/KT66 has a heater current of 0.9A and the GEC KT66 a heater current of 1.3 A If my calculations are correct,this would be a 31% decrease of heater power for the output valves. This must be good for the mains transformer life. Perhaps someone would confirm this. Regards, Paul
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