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Changing 12ax7 tubes for 12at7 tubes on a phono preamp with too much 12at7 preamp phono 12ax7 riaa amplifier tubes rca gramofonowy przedwzmacniacz finished turntable schematic jaki preamplifier audiostereo little zone
Changing 12AX7 tubes for 12AT7 tubes on a Phono preamp with too much