6P14P / EL84M / 6BQ5 MATCHED PAIR (0-2% tol.) NOS/OTK Röhren von 1983!
22,87 €
6P14P / EL84M / 6BQ5 MATCHED PAIR ( 0-2% tol.). Each tube is heated for at least 30 minutes, listened in an amplifier with plate current monitoring and a 1 kHz oscilloscope. The sorting of tubes in pairs or quads is done taking into account both the anode and the transconductance.
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