Two, Tung Sol 6SN7GTB tubes. Opposing black plates, TALL bottle D-getter. The 6SN7GTB can be used in all applications calling for the 6SN7GT and 6SN7GTA. Firm bases, excellent silvering. Tubes are matched for dynamic gain and structure, testing at 2875-2750 and 2750-2750 where pass/fail is 1625 micromho.
Item Tag: United States
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1960 Westinghouse 6SN7GTB ECC33 Tall Bottle Tubes, Matched Pair, Tested, NOS/NIB
All of these tubes have been tested for transconductance, shorts, gas, leakage and life. These tubes have black ladder plates and halo getters. They have 1960 and 1961 date codes. They have been tested for shorts, gas, and transconductance.
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WESTINGHOUSE 6SN7 GTB TUBE 1963 TOUGH DOGS 2 HOLE GRAY PLATES MATCHING SET NIB
🔥🔥 RARE 1963 WESTINGHOUSE 6SN7GTB “TOUGH DOG” PERFECT MATCHED PAIR 🔥🔥. 🐾 LEGENDARY 2-HOLE PLATES • U.S.A. MADE • 📦 ORIGINAL WESTINGHOUSE BOXES • 🎵 AUDIOPHILE FAVORITE. 🏭 Westinghouse Electric Corporation.
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SYLVANIA 6SN7GTB AUDIO VACUUM TUBE BLACK T PLATE O GETTER, COIN BASE TV-7 TESTED
The minimum is equal to 65% of the life of the tube. TESTED AT: 103/99.
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ZENITH 6SN7 GTB TUBE RED CROWN PREMIUM AUDIO CHROMED HALOS MATCHED QUAD (4) FOUR
If RCA was Chevrolet, Zenith was Cadillac. ✅ Heavy-Duty GTB Construction. 🔥 NOS Zenith 6SN7GTB Matched Quad – Original Zenith Boxes – Premium USA Audio Tubes 🔥. ✅ Genuine USA-Made Zenith 6SN7GTB. ✅ Original Zenith Radionic Tube Boxes.
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GE 6SN7GTB “GLOW DOME” Side Getter Copper Posts – PLATINUM MATCHED on AT1000
Excellent warmth in the midrange, plus the side mounted getter adds rigidity to the plate structure, reducing microphonics. These are a bargain now but are quickly being gobbled up by audiophiles. Discover the quality of these quality USA made tubes as they will be worth their weight in gold in the future.
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6SN7 GTB SYLVANIA NOS PLATINUM MATCHED PAIR
*****SELLING WORLWIDE*****>>>>SYLVANIA 6SN7 GTB,NOS,PLATINUM MATCHED PAIR (well-balanced triode-triode & tube-tube in transconductance & plate current).Label print size may differ, 97-99% GREEN PRINT VISIBLE.We have enough collection to supply PLATINUM MATCHED tubes.>>>>>TUBES ARE “STOCK PHOTO”. SUPPLIED IN Sylvania BOX. TESTED TWICE,*****1st) NO SHORTS,NO GAS AND WELL-BALANCED TRIODES IN TRANSCONDUCTANCE & PLATE CURRENT(PLATINUM MATCHING).WITH HICKOK TUBE TESTER WHERE 2100/2100 uSIEMENS IS MINIMUM. *****2nd) TUBES ARE NOT USABLE UNLESS THEY ARE LIVE AUDIO TESTED WITH NO HUM & NON-MICROPHONIC.TESTED USING MODIFIED DYNACO PAS 3 & TUBE OTL. Having a minimum of, TUBE1)2850/2950 uSIEMENS & 8.1/8.5 ma TUBE2)2800/2900 uSIEMENS & 8.1/8.2 ma plate current.WHERE 2100/2100 IS minimum AND NOS START AT 2600/2600 uSIEMENS WITH HICKOK TEST. *****TUBES WITHOUT TEST RESULT IS NOT SOUND DECISION & LISTING ADS THAT SAY’S “NOS”,”test good” or “test strong” IN VACUUM TUBES IS NOT ENOUGH AND AVOID SURPRISES. ****** INTERNATIONAL SHIPPING IS ACTUAL USPS SHIPPING RATES.*****BEWARE OF CLONED/FAKE RUSSIAN MADE SYLVANIA 6SN7’S. ******PLEASE CHECK MY OTHER COOL AUDIO STUFF. *****QUESTIONS ARE ALWAYS WELCOME.
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2, NEW, Westinghouse 6SN7GTB, TALL bottle, 1964, matching pair, 6SN7GT
Two, new in box, Westinghouse 6SN7GTB tubes. Opposing flat, grey plates, TALL bottle, upper halo getter. Outstanding sonics. The 6SN7GTB can be used in all applications calling for the 6SN7GT and 6SN7GTA.