Sylvania 12AU7 12AU7A NOS-Testing Copper Support Rods Triple 3 Mica Vacuum Tube For Your Bottlehead Univalve T15 T03 Pictures Three and Four are

Pictures Three and Four are included to underscore this fact

and if you need just one strong section

I have played them in my Radio Craftsmen RC-2 monoblocks (with adapters

black plates and Micanol bases

FOUR-STAR REVIEWS OR HAVE LOST A CUSTOMER BECAUSE I REFUSED TO EITHER ISSUE A REFUND FOR A TUBE THAT WENT BAD AFTER IT HAD BEEN USED OR A BUYER KNEW NOTHING ABOUT TUBE REBRANDING AND CLAIMED THAT SOMETHING MADE BY TUNG-SOL AND BRANDED BY EMERSON WAS MADE BY EMERSON

Sylvania 12AU7 12AU7A NOS-Testing Copper Support Rods Triple 3 Mica Vacuum Tube For Your Bottlehead Univalve T15 T03 Pictures Three and Four areThis Sylvania triple mica 12AU7A ECC82 dual triode was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 73 79 where new nominal is 50 50. This tube has two additional vertical support rods; an additional mica spacer for low microphonics; crenelated, round mica spacers and excellent flashing. I have played it in my Bottlehead Crack headphone amplifier and it sounds