Trilogy 968

This fine EL34 /KT88 power amp was in the workshop for some TLC. Quite a simple problem in fact. In side there is a switch to set the bias for EL34 or KT88 valves and this had been set in the wrong position for the EL34 valves which were fitted. Once this was correctly set, the bias could be adjusted thus getting rid of the hum for which the amp was brought to me.

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