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need a good low parts phono tube preamp schematic.... | diyAudio
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A MM PHONO vacuum tube preamplifier DIY - Davide Bucci
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7025 Phono Circuit From Tube Manual | diyAudio
A MM PHONO vacuum tube preamplifier DIY - Davide Bucci
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Borbely RIAA Preamp With Tubes - A Project Remembered and Revisited | audioXpress
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