Note – there are no markings on the glass, the markings have faded or rubbed-off. Sylvania 6SN7GT. Matched Pair +1.
Item Tag: 6SN7
-
SYLVANIA 6SN7 GTB TUBE 1968 GREEN LABEL BLACK BASE CHROME TOP FOIL MATCHED SET
🏭 Manufactured by Sylvania in Emporium, Pennsylvania during the 12th week March of 1968. ✨ Sylvania factory boxes are included. PERFECT MATCHED SET. 📅 42 = internal lot, tooling, shift, or inspector designation.
-
GE 6SN7 GTB 1962 WHITE LABEL CHROME SIDED HALO TALL BLACK BASE MATCHING SET
Where 50 ( μ) is Good these tubes peg at 73/77 for Emission. Where 2,600 (ma/V ) is Good these tubes peg at 3,000/3,100 for Mutual Conductance. Mutual Conductance: The 750 is a dynamic mutual conductance tester.
-
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.
-
Matched Pair 1956 GE Side Getter 6SN7GTB Tubes STRONG! 6SN7
Matched Pair 1956 GE Side Getter 6SN7GTB Tubes. These tubes test 84/84 and 85/85 where a new tube tests 85/85.
-
RCA 6SN7 GTB TUBE 1968 GLOW TOPS 2 HOLE TOUGH DOGs TALL BOTTLE MATCHING SET NIB
🔥 RCA 6SN7GTB – NOS/NIB – 1968 Date Code BX – Genuine RCA Radiotron 6SN7GTB matched pair 🔥. TOUGH DOGS. 📅 Date Code BX = September 1968 RCA production. TALL BOTTLE. PERFECT MATCHED SET. ✨ Tall bottle construction.
-
SYLVANIA 6SN7 GTB TUBE 1951 CHROME TOPPED HALO BLACK PLATES MATCHING SET
✔ Custom 6SN7 platforms. 🔥 Genuine U.S.A. Sylvania manufacture. MATCHED SET. BLACK V PLATES. Production Year: 1951. EXCL USIVE HIGH FIDELTY TUBE. 🔥 Matching pair. 🔥 Black plate construction.
-
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.
-
RCA 6SN7 GTB TUBE 1962 TOUGH DOGS 2 HOLE BLACK LADDER PLATES MATCHING SET
Production Year: October 1962 December 1962. TOUGH DOGS. 2 HOLE PLATES. MATCHED SET. Closely Matched Codes: LM LV. I mark every tube in order to avoid tube rolling! EXCL USIVE HIGH FIDELTY TUBE. BEST TUBES ON THE MARKET. NO LEAKS. NO SHORTS.