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audio lecture 22, build AC HUM noise killer for your 300B 2A3 tube amplifiers w active ripple filter
audio lecture 40, tube tester tip, test 300B w 2A3 data if your tester doesn't have 300B
audio lecture 28, how to insert 300B 811 572B 2A3 tubes into UX4 sockets
audio lecture 27, preamplifier circuit 12AU7 + 2A3, line output transformer coupled, FLUXION A JG9
audio lecture 31, why high voltage is dangerous. tube amplifier project w transmitting tubes
audio lecture 23, why ultra fast recovery diodes?, silicon diodes instead of tube rectifiers
audio lecture 51, high mu triode 805, for high power PP or SE by class A2, AB2 tube amplifier
2A3 C tube amp 300B plate 2V5 AC heather
audio lecture #18, RCA vs XLR, Balanced vs Unbalanced signal, CD player audio mixer microphone
1960's LectroLab R203 Series Filament Tube Amplifier Servicing and Demo
audio lecture 21, how to test audio output transformers(OPT) : impedance, HV insulation, DC-R
Noise Killer (2016)
