(2) Telefunken Diamond 12AU7 tubes. Used but excellent testing.
Tested on calibrated Hickok 539C and op checked for noise and microphonics in a working amp.
Min transconductance is 1950 mmhos, approx 60% of “new” value.Tube 1: Smooth plate. Printing = Good $30.00
T1: 3400@11.20ma
T2: 3100@10.16ma Tube 2: Ribbed plate. Printing = Good $30.00
T1: 3300@10.46ma
T2: 3300@10.06ma Payment by Personal Check w/hold, MO, Cashiers check, PayPal "gift" option.
Shipping is by USPS Priority Mail and very well packed. Buyer pays shipping/Insur. Contact me if interested.
clumpster@earthlink.net Thanks for looking.
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