The minimum is equal to 65% of the life of the tube. TESTED AT: 103/99.
🏭 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.
*****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.
✔ 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.