GE 6SN7GTB
CHROME TOPPED FOIL
GRAY LADDER PLATES
DUAL MICA TOP
NICELY MATCHED SET of THREE
Extremely Rare
(Ships In *GE Boxes)
★★★ Amazing Historic Vintage Tubes ★★★
Production Year: 1950's
Closely Matched Codes
Short Black Base
White Label
Set of Three (3) Tubes
Made In the U.S.A.
★★★ These Tubes are Very Rare in Brand New Condition ★★★
BEST TUBES ON THE MARKET... NO SHORTS... NO LEAKS...
★★ TESTED★★
Tested on Hickok 750
750 - Where 2,600 mA is Good these tubes peg at around 2,900 mA on both Plates
All Tubes Test Good - NOS
Match within 2% to 5%
Perfectly Balanced - Zero Drop in Tube Life Test
These run Super Cool - Rare and Exceptional - Holographic Tone
Made for High Fidelity
Warm midrange, excellent bass and detailed top end…. The side mounted getter adds rigidity to the plate structure and eliminates microphonics! Quality made vintage vacuum tubes in Like New condition are very rare and will always outperform even the very best newer builds... For a Fraction of the Cost these are comparable to the RCA 5692 Red Base!
The GTA was developed by GE to resolve Plate-Voltage breakdown issues and microphonics found in the original 6SN7GT… This was a consistent issue with some equipment of the period that used the GT... The improvements made to the tubes were developed without deviating from the original design of the 6SN7GT... The GTA/GTB also added controlled warm-up!
If you’re experiencing typical 6SN7GT noise and voltage issues in your equipment, the GTA and GTB could make a significant difference in helping you solve some of these issues... Keep in mind there is a Voltage Requirement difference, and you should always stick with the tube type recommended for your amp!
This is an amazing Vintage Set - Extremely rare! 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: 14 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 ★