SURPLUS ELECTRON TUBES, BOTH NEW OLD STOCK AND USED, TESTED TUBES. DUE TO THE NATURE OF OLD TUBES, OUR ONLY GUARANTEE IS THAT THEY WILL BE AS DESCRIBED. ADDING TUBES IS A SLOW PROCESS. WE HAVE THOUSANDS OF TUBES SO SEND AN EMAIL IF YOU NEED A TYPE NOT LISTED. WE WILL DO OUR BEST TO HELP. EIMAC 4X150G $49.95 RCA AUDIO TUBES, 5963/12AU7, 5 EACH $20.00 EIMAC POWER TUBE $49.95 6CB6 ELECTRON TUBE, 5 EACH $9.95 6Y6GT ELECTRON TUBES, 5 EACH $19.99 6AU6, 5 EACH $10.00 PHOTOMULTIPLIER TUBE $75.00 6JS6A ELECTRON TUBE $20.00 12AU7A AUDIO TUBES $7.00 6DQ5 ELECTRON TUBE $8.00 31LQ6 ELECTRON TUBE 6JU6 ELECTRON TUBE $10.00 76 ELECTRON TUBE $9.00 6BG6GA ELECTRON TUBE $7.00 6B4G ELECTRON TUBE $25.00 TYPE 6SN7GTB ELECTRON TUBE $15.00