Used Tubes - Tested
Telefunken ECH81 6AJ8 Vacuum Tube Pair Diamond Bottom Logo
Test results are 625/675 and 720/740 where the minimum is 475/475 ..
$17.99 USD
Telefunken EF85 6BY7 Diamond Bottom Vacuum Tube
Used EF85/6BY7 Vacuum Tube Tested very strong on a Hickok 752A Test result is 650, where the mi..
$14.99 USD
Telefunken EL84 / 6BQ5 Diamond Bottom Vacuum Tube
Tested 6750 mhos on Hickok 752A, where the minimum new is 4750Made in West Germany and has halo gett..
$28.99 USD