Matched Pair RCA 5963 12AU7 12AU7A Vacuum Tubes Black Plate Industrial-Grade 2nd Quadrimester LP

Matched Pair RCA 5963 12AU7 12AU7A Vacuum Tubes Black Plate Industrial-Grade 2nd Quadrimester LPThis matched pair of RCA black plate 5963 dual triodes was tested on our Paul Hart calibrated TV7 U and our Maxi Preamp II for shorts, gas, noise, transconductance and gain. There were no shorts, noise or gas and they tested as follows: Tube One: Noise: 85. 2 dB 85. 6 dB ( 92 dB is the Maxi Matcher's noise floor) Transconductance (Maxi Matcher): 1789 1690 Transconductance (TV7 U): 55 55 where minimum (65%) is 50 50 and 100% is 77 77. Gain (Mu (): 17.

Its diodes measured 54 and 42

Transconductance readings are 46

IN OVER OVER 6000 TRANSACTIONS

It portended growth but alas we got suicide and embezzlement instead

82 and 85 where minimum (65%) is 58 and 100% is 89

Both measured 72 where minimum (65%) is 58

Tube One (12B4

This special edition DVD is still sealed

nostalgic-looking Super Silvertone 6P5G triode was tested on our Paul Hart-calibrated TV7/U for shorts

These three US-made 12AV5 output tubes were tested on our Paul Hart-calibrated TV7/U for shorts

noise or gas

This Sylvania 5933 / 807W / FU7 output tube was tested on our Maxi-Matcher 2 for shorts