Tube amplifiers

RIAA preamp 6F12P + ECC85

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RIAA preamp 6F12P/ECC85 - main PCB - all in one
RIAA preamp 6F12P I.
RIAA preamp 6F12P/ECC85 - input tube
RIAA preamp 6F12P II.
RIAA preamp 6F12P/ECC85 - output tube
RIAA preamp 6F12P III.
RIAA preamp 6F12P/ECC85 - in case, front view
RIAA preamp 6F12P IV.

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Created by Petr Zwak. All photos are copyrighted.
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