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2 RCA 12AX7A ECC83 Audio Tubes NOS NIB USA Hickok




Item History & Price

Information:
Reference Number: Avaluer:17783768Country/Region of Manufacture: United States
Brand: RCAType: 12AX7A
UPC: Does not apply
Original Description:
2 RCA 12AX7A ECC83 audio tubes NOS NIB NEW USA Hickok tested

You are buying 2 tubes, a pair of vintage RCA 12AX7A-ECC83 audio tubes, NOS NIB NEW USA.  Outstanding audiophile tubes.

Tube #1:
triode 1 = 1500 micromhostriode 2 = 1300 micromhosTube #2:
triode 1 = 1700 micromhostriode 2 = 1400 micromhos

NOTES:
No shorts/leakage/gasPhotos show all triode sections being tested12AX7 Test parameters = -1.5 filtered Vdc bias, signal voltage 1.0vac, 6000 meter s...cale, scores of 800 micromhos or higher are good.
Test results on my professionally calibrated Western Electric KS-15560 (advanced version Hickok 539B) mutual conductance tube tester, with digital plate current meter upgrade. 
[INV2]



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