Hitachi 12AU7 ECC82 Vacuum Tube NOS NIB For Your Bottlehead Or Univalve Triple Tested 1st Quarter BW02 perfectly-matched pair of Ken-Rad 6SJ7s

perfectly-matched pair of Ken-Rad 6SJ7s was tested on our Paul Hart-calibrated TV7/U for shorts

These tubes dissipate an additional three watts -- or so -- more than EL34s with standard skinny bottles

This new old stock-testing Sylvania 14AF7 dual triode was tested on our Paul Hart-calibrated TV7/U for shorts

where minimum (65%) is 36 and 100% is 56

54 and 54 where minimum (65%) is 40 and 100% is 62

Hitachi 12AU7 ECC82 Vacuum Tube NOS NIB For Your Bottlehead Or Univalve Triple Tested 1st Quarter BW02 perfectly-matched pair of Ken-Rad 6SJ7sThis new old stock, new in box Hitachi 12AU7 ECC82 dual triode was tested on both our Paul Hart calibrated TV7 U as well as our Maxi Matcher Preamp Tube Tester. On the Maxi Matcher, it tested as follows: Dynamic Range: 77. 6 dB 82. 3 dB ( 92 dB is the Maxi Matcher's noise floor) Transconductance: 1410 1411 (New is approximately 1450) Gain (Mu (): 14. 6 15. 7 (New is approximately 17) On the TV7 U, it tested as follows: 79 77 where minimum (65%) is 50