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Preamp Phono RIAA (DIY)
Preamp + Crossover + Bi-amp 5881
Tube RIAA point to point preamp from scratch. - diyAudio
Single Tube RIAA preamp too good to be true? - diyAudio
RIAA pre amp circuit Archives - Amplifier Circuit Design
Tube RIAA point to point preamp from scratch. - diyAudio