5AR4 換 Bendix 6106
6SN7 換 amperex 5691
or 其他推介 ?!
thx
好奇是那種架構的 amp?
節錄一斷警語 as below
6106=indirectly heated 5Y3GT, filament current reduced to 1.7A, uprated to 1550 Volts)
(the 6106 CANNOT sub for a 5Y3GT in many power supplies due to it's VERY slow filament/cathode warmup
time of 30-45 seconds, contact your equipment manufacturer before subbing a 6106 for a 5Y3GT
5AR4 是direct heater, 也不能直接替換.
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