Silver Gradetubes are matched within15%, Gold Gradetubes are matched within10% and Platinum Plus 1%. You are purchasing two "Platinum Grade" tubes. These are JAN (Joint Army Navy) military grade...
✔ Custom 6SN7 platforms. 🔥 Genuine U.S.A. Sylvania manufacture. Mutual Conductance: The 750 is a dynamic mutual conductance tester. This is a more sophisticated test than a basic emission...
(>>>>PLATINUM MATCHED PAIR(well-balanced triode-triode & tube-tube in transconductance and plate current). 1st) NO SHORTS,NO GAS AND STRONG TRANSCONDUCTANCE WITH HICKOK TUBE TESTER. 2nd)TUBES ARE NOT USABLE UNLESS THEY ARE...
One Excellent RCA 6SN7GTB Tube. Fully Vetted 6SN7GTB Tube in Excellent Condition. Excellent Discriminating Test Results from the AMPLITREX Tube Tester. AMPLITREX AT-1000. A New Labeled RCA Tube Box...
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...
Tested NOS on an amplitrex AT1000 tube tester at 124/120 emissions and 103/111% gm
FROM A RETIRED AUDIOPHILE AND RADIO COLLECTOR.
2-Piece Identical Pair of Westinghouse "Tall Boy" 6SN7GTB tubes with after-market Westinghouse boxes. Both tubes feature BLACK, 2-Hole plates with a top-mounted SQUARE "D" getter. Very CLEAN tubes with...
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...
Production Year: September 1951 October 1951. TOUGH DOGS. 2 HOLE PLATES. MATCHED SET. Closely Matched Codes: KI KJ. I mark every tube in order to avoid tube rolling! EXCL...