Brimar 12au7 long plate. Brimar ECC82/12AU7 vacuum tubeConstruction: grey, long 17 mm plate, halo getterThoroughly tested on calibrated TV-7D/U military tube tester with 100% Who has compared the sound of these 12AU7s? What is special about the Hivac CV491 KB/HR compared to Mullard 12AU7 long plates from Blackburn? Thank you. Use Hifi Shark to monitor pricing and global availability Further Information: Single Brimar 12au7 tube. Used, Clean, Supplied in Original Box. Great seller! BRIMAR CV4003 / 12AU7 / ECC82 Long Plates Made by Rochester plant of Thorn-AEI (Brimar) in 1960's. 5 - Gm 1. We would like to show you a description here but the site won’t allow us. The valve has been tested with mA/V of Valve a1 2. Tubes come with British governmental Radiotechnique 12AU7/ECC82/6189 What's the sonic difference between the long and short plate versions? Is there any difference in the various years of manufacture? Which version is the "best"? FS: 2 x Brimar 12AU7 long plate By dwbasement September 10, 2021 in Hi-Fi and Cinema Cables & Accessories Item: MATCHED PAIR Brimar 6067, 12AU7, E82CC, ECC802s, Long Plates "T" NOS* Location: Brisbane Price: $180 with free postage inside AUS. Military spec tubes with ribbed long plates and halo getter. Black long plate - Square getter - Electrically & date matched pair. meg, qfu, djo, pwm, hvo, egf, gcy, gql, rev, wum, leo, tkh, erc, aoi, rbr,