Other Popular Power Tubes otpoppowtub7 2A3 Sovtek (Russia) Single Tube. 1 left 2A3 Sovtek (Russia) Reports from listeners indicate this is a good or better sounding than expensive NOS types. Looks like just the ticket for people who'd like to experiment but don't want to try higher plate voltages with NOS tubes... these have a plate voltage rating of 450V and can be used at a plate dissipation of up to 30W. 2a3sovtek$67.95 7591 S JJ/Tesla Matched Pair New version of 7591 from JJ/Tesla. These have bulbs closer to the the size of the original US made version for fewer clearance problems. Price is for 2 tubes (Matched pair) 7591jjmp 7591 S JJ/Tesla Matched Quad New version of 7591 from JJ/Tesla. These have bulbs closer to the the size of the original US made version for fewer clearance problems. Price is for 4 tubes (Matched quad). 7591jjmq JJ 7591 TUBE SINGLE New version of 7591 from JJ/Tesla. These have bulbs closer to the the size of the original US made version for fewer clearance problems. jj7591single 6BM8 Electro Harmonix (Russia) Single Tube 6BM8 Electro Harmonix (Russia). The Electro Harmonix 6BM8 is a great sounding replacement. EH6BM8$49.95 6BM8 ECL82 TUBE - VARIOUS BRANDS Various USA, Japan, Britain. 6bm8ecl82$29.95 Winged-C 6P1P-EB Tube Quality Russian made 6P1P. Electrical equivalent to the 6AQ5 / EL90, though the pin-out differs. 6p1p$29.95 6K6GT NOS Tube 6K6GT New old stock glass tube. USA. Various brands. 6k6gt$29.95 50L6 GT Tube Various NOS Nice General Electric or other NOS US made 50L6GT tube. 50l6$22.95 Triode, USA Customer Service M-F 9AM-4PM CT 1-800-774-3201 Email us Anytime: questions@triodestore.com