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Vinylsavor: the octal preamplifier mk2: circuit 6sl7 / kt77 tube amplifier power supply schematic Diy phono preamp schematic
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6sn7 electron tube preamp line circuit diagramPhono preamplifier 6sl7 6sn7 mj 6sl7 / 6sn7 se phono preamplifier.
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