RCA 12BH7 12BH7A Vacuum Tube Valve NOS NIB Zenith Octal These three GE 6EU8 tubes
$25.31
Description
These three GE 6EU8 tubes tested to spec on our Paul Hart-calibrated TV7/U
7 (New is approximately 17)
This Raytheon (JAPAN) 12SN7GTA dual triode was tested on our Paul Hart-calibrated TV7 for shorts
All measured 2100 micromhos where new/nominal is 2000 and minimum (65%) is 1300
This lot of seven GE new old stock
RCA 12BH7 12BH7A Vacuum Tube Valve NOS NIB Zenith Octal These three GE 6EU8 tubesThis new old stock testing RCA 12BH7A was tested on our Maxi Preamp II for shorts, gas, noise, transconductance and gain. There were no shorts, noise or gas and it tests as follows: Noise: 84. 3 dB 83. 6 dB ( 92 dB is the Maxi Matcher's noise floor) Transconductance: 2219 2211 (M M has no recommended value. New 12BH7s have averaged 2200 to date) Gain (Mu ()): 17. 1 16. 5 (New nominal is with a standard deviation of 16 16) As I write, I am playing it
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