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Sub tube for 12ax7 (Fender Pro Junior Amp)?
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1 pz E283CC (in alto) a 12AX7 12AU7 12AT7 ECC83(6.3V)(in basso) tubo adattatore per tubo a vuoto Audio fai da te convertitore presa spedizione gratuita - AliExpress
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12AX7 vs 12AT7 vs 12AU7 Tube Shootout (Differences, Which To Buy)
12AX7 vs 12AT7 vs 12AU7 Tube Shootout (Differences, Which To Buy)
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