Tung-Sol 6SN7 round plate pairs with oval top micas. Black glass. A “Holy Grail” 6SN7 tube with a legendary rich, detailed, 3-dimensional and musical sound.Matched pairs shipped in white boxes (see listings and photos). All tubes have been tested for noise in my preamp. All sounded very quiet. Tubes were tested on my Hickok 600A gm tester (see photos). Measurements are in micromhos. AVERAGE NEW 6SN7 TUBES TEST AROUND 2600 GM. THE 65% LEVEL IS 1690. I cannot guarantee that these tubes will test the same on your tester as on mine. My tubes have a money back guarantee. If a tube arrives DOA, I will pay return shipping for a refund. Buyer pays return shipping for all other reasons. Please order by pair number. Questions are welcome. Photos of all readings available on request. SOLD Pair #1: $450.00. Tight match. 2050/2200 and 2050/2250. One labeled TUNG-SOL CTL 6SN7 GT with clear grey lettering. The other is made by Tung-Sol but is branded CONCORD with clear red lettering. Physically and sonically identical to the Tung-Sol labeled tube. Tight bases, round plates, black glass, and oval micas. Both tubes have excellent lettering and read 6SN7 GT on the black glass. Pair #2: $350.00. 1850/1950 and 2100/2150. One labeled TUNG-SOL CTL 6SN7 GT with clear grey lettering. The other made by Tung-Sol but is branded Hytron with white lettering. Physically and sonically identical to the Tung-Sol labeled tube. Tight bases, round plates, black glass, and oval micas. Both tubes read 6SN7 GT on the black glass. SALE PENDING Single tube: $250.00. 2500/2350. Strong testing tube labeled TUNG-SOL CTL 6SN7 GT with excellent grey lettering. Tight bases, round plates, black glass, and oval micas. Reads 6SN7 GT on the black glass. PRICES INCLUDE USPS PRIORITY SHIPPING WITHIN THE CONTINENTAL USA AND US PAYPAL FEES. Canadian customers please email for shipping costs and PayPal fees.
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