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Mullard Stereophonic Pre-amplifier
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6 tube stereo pre
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Mullard Stereophonic Pre-amplifier
5 Tube Stereo Amplifier |Free electronic circuit diagrams
6 Tube Stereo Pre
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12AX7 Tube (valve) Preamplifier Kit | Valve amplifier, Electronic
Tube Preamplifier Schematic
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Hi-Fi Stereo Preamp Circuit
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12AX7 Preamplifier Schematic: | Valve amplifier, Diy guitar amp