WESTINGHOUSE 6SN7GTB
'1960s' GOLDEN 
STAR
LEGENDARY 2 HOLE TOUGH DOGS
CHROME TOPPED RINGED HALOS
GRAY PARALLEL RIBBED LADDERS
RECTANGULAR MICA
MATCHED SET
Extremely Rare
(Ships in *WH Boxes)
★★★ Amazing Historic Vintage Tubes ★★★
Production Year: 1960s
Closely Matched Codes: 337 9R22 337 60-R30
Tall Black Base
Gold Label
Set of Two (2) Tubes
Made In the U.S.A.
★★★ These Tubes are Very Rare in Good Working Condition ★★★
BEST TUBES ON THE MARKET... NO SHORTS... NO LEAKS...
★★★ HICKOK TESTED ★★★
Tested on Hickok 750 for Emission, Mutual Conductance
Where 50 mA is Good these tubes peg at 77/78 for Emission
Where 2,600 μA is Good these tubes peg at 2,900/3,100 for Mutual Conductance
Tube 1. '63' Plate 1. - 72 mA - 3,000 μA at Idle
Plate 2. - 70 mA - 2,900 μA at Idle
Tube 2. 'EX' Plate 1. - 70 mA - 2,900 μA at Idle
Plate 2. - 65 mA - 2,800 μA at Idle
Balanced - Rare and Exceptional - Full Tonal Range
THESE TUBES WERE MADE FOR HIGH FIDELITY
Power tubes are electrically matched so each tube will have the similar amount of idle, plate current and amplification characteristics when used in an amplifier! This is done so the tubes can work together in your amp giving you optimal sound quality and tube longevity... Matched tubes also receive extra quality checks to reduce the possibility of getting a faulty power tube that may have slipped by! All of my Tube Inventory is Boxed and Thoroughly Tested... *Test Ratings are Specific to My Fully Calibrated Test Equipment!
The tubes are put through a Life Test and each plate is warmed and measured for emission, leaks and shorts! Each tube is thoroughly inspected, they are described accurately and listed based on fair value...
My Return Policy: 30 Days - Seller pays return shipping! All tubes are Guaranteed to be as described... You can buy with complete confidence! Please read listing thoroughly and ask any questions prior to purchase... Tube rolling will not be tolerated! Any and all returns must be in identical condition as when they were received... Test Driving Vintage NOS Tubes is completely unacceptable and highly unethical! Buyer will be charged for mishandled and damaged returns...
All tubes manufactured emit some type of sound, hum or slight microphonic! Noisy tubes would always be auctioned or tossed... I mark every tube in order to avoid tube rolling! Variations in Line Output and Test Equipment excludes any claims regarding matching test results on any equipment other than mine... *Test results from different Test Equipment IS NOT Guaranteed!
International Buyers Welcome! I use eBay Global and USPS 1st Class International exclusively, unless otherwise stated... I am unable to change declared value on customs forms, and International Buyers are responsible for all taxes, customs and additional fees! Each tube is fully insured, boxed and shipped safely...
★ Expedited Shipping ★
★ Shipping times may vary based on region ★
★ *Honesty, *Reliability and *Integrity are *Everything ★