TELEFUNKEN
Platinum Matched Pair 12AX7 Telefunken ECC83 Tested NOS Ribbed Anodes <>
Platinum Matched Pair 12AX7 Telefunken ECC83 Tested NOS Ribbed Anodes <>
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Platinum Matched Pair (2 tubes) 12AX7 Telefunken ECC83
Ribbed anodes, diamond bottoms, Berlin tube plant codes.
Pull outs, tested NOS. Very nice, perfectly balanced tubes with a lot of life left in them.
Tested also for hum and microphonics in RIAA preamp.
They are tested with 250V on anodes and -1.5V on grids, 100% is 2.15 mA, they test (2.1/2.3) (2.1/2.0) mA
