Hitachi 12AU7 ECC82 Vacuum Tube NOS NIB For Your Bottlehead Or Univalve Triple Tested December 18 2020 a mesh plate

a mesh plate

ladder plates

flashing is excellent and the bases appear to be made of micanol

Admiral-BRANDED 5V4G rectifier tube was tested on our Paul Hart-calibrated TV7/U

Hitachi 12AU7 ECC82 Vacuum Tube NOS NIB For Your Bottlehead Or Univalve Triple Tested December 18 2020 a mesh plateThis 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