Kit Scheda Preamplificatore Full Balance HiFi 12AU7 ECC88 Tube Fare riferimento ARC Premp

(Use 12AU7 x 2 pcs, ecc88 x 2 pcs, 6x4 one peice. No manual, parts list, need DIY electronic knowledge. Risk of failure, you need to know how to make the tube preamplifier work.). The circuit is referenced from the famous classic circuit ARC, fully balanced design.

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