Valvo
Platinum Matched Pair ECC83 Valvo Philips 12AX7 Tested 125% NOS
Platinum Matched Pair ECC83 Valvo Philips 12AX7 Tested 125% NOS
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Platinum Matched Pair (2 tubes) ECC83 Valvo Philips 12AX7
Tested 125% of NOS tubes. Very nice, super strong, perfectly balanced tubes with a lot of life left in them.
Tested also for hum and microphonics in RIAA preamp.
Made in famous Heerlen, Holland plant in 1966. The same etched DELTA codes!
Pull outs from professional backup device.
They are tested with 250V on anodes and -1.5V on grids, 100% is 2.15 mA, their measurements (2.6/2.6) (2.6/2.8) mA
