(7) Good used Raytheon black-plate 12AU7A pre-amp tubes. Manu in 1958. All have shiny black plates, D-getter. EIA code: 280. Tested on a calibrated Hickok 539C. Tested for noise/microphonics in an amplifier. Minimum accepted value for each triode on a 539C is 1950 umhos.
Pic doesn't show, but I've cleaned tubes off to keep date codes intact.
Price is $15.00 for each tube. #5:
T1: 2250 @ 7.80 ma
T2: 2000 @ 6.74 ma #4: T1: 2750 @ 9.30 ma
T2: 2800 @ 10.55 ma #8:
T1: 2100 @ 7.31 ma
T2: 2000 @ 6.95 ma
#10 T1: 2700 @ 9.31 ma
T2: 2400 @ 8.15 ma (3) others are available also. Shipping: USPS Priority Mail and packed very well! Insurance is up to you, but recommended. Payment: Money Order, Personal check w/hold, PayPal “gift” option or PayPal + “fees”. If interested, contact me and if you have any questions please ask!
Thanks! CW Stoddard
clumpster@earthlink.net
IF YOU HAVE A QUESTION..PLEASE ADD YOUR RETURN E-MAIL IN THE MESSAGE!!!
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