For sale a 6SN7 GT WWII RCA US Army Tube .This tube has Grey coated glass, black plates and balanced sections to ensure the best sound for your preamp. Tested with my Centrad 752A tube tester and here are my results: tube 1 tube2 gm=2.6mA/V gm=2.8mA/V Vplate=100V Vp=100v Vg=0V Vg=0v Vfil=6.3 Vg=6.3 Thanks for looking and happy bidding.We sell worldwide. Due to increased scum bidding on ebay all sales are final.The items we sell are old and guarantee has expired long ago. Please read the sale terms before you bid |