Tube RIAA MM preamplificatore phono "tubeCOR" pcf802/ecf802 pcb fai da te + pcb alimentazione

Tube MM phono preamplifier "tubeCOR" pcf802/ecf802 pcb. pcf802 is 9v. ecf802 is 6.3v. only pcb,no components. there are several different variants of pcb.

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