ADMIRAL by GE 6SN7 GTB TUBE TALL BLACK BASE CHROME SIDED HALO MATCHING SET NIB

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Seller: Top-Rated Seller top_shelf_valves ✉️ (1,054) 100%, Location: Guadalupe, California, US, Ships to: WORLDWIDE & many other countries, Item: 335210040912 ADMIRAL by GE 6SN7 GTB TUBE TALL BLACK BASE CHROME SIDED HALO MATCHING SET NIB.

ADMIRAL  CR OW NS  by GE 6SN7GTB  *BOGEYS*

CHROME SIDED HALO

PERFECTLY MATCHED SET

Extremely Rare - NIB (New In *Reproduction Boxes)

★★★  Amazing Historic Vintage Tubes   ★★★

Production  Year: 1960 1961

Closely Matched Codes: 60-48 61-09 188-5

Tall Black Base

Whit Crown  Label

Set of Two (2)

Made In the U. S. A.

★ ★★  These Tubes are  Very Rare  in  Brand New  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  77/80  for  Emission

Where  2,600 μA  is  Good  these tubes peg at  3,000/ 3,200   for  Mutual Conductance

Tube 1. '60' Plate 1.   77 mA  3,200   μA    at Idle -  NOS

                     Plate 2.  -  77 mA 3,100   μA    at Idle  -  NOS

Tube 2. '61' Plate 1.  -  77 mA 3,200   μA    at Idle  -  NOS

                     Plate 2.  -  80 mA 3,300   μA    at Idle  -  NOS

Balanced - Rare and Exceptional - Full Tonal Range

EXCL USIVE HIGH FIDELTY TUBE

 

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 : 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   ★

  • Condition: Open box
  • Condition: NOS - Tested - Guaranteed
  • Brand: Admiral
  • Type: NOS Tube
  • Vacuum Tube: Hi Fi
  • Radio Tube: Valve
  • Model: GE 6SN7 GTB
  • Manufacturer: General Electric
  • Country/Region of Manufacture: United States

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  •  Popularity - 2 watchers, 0.0 new watchers per day, 74 days for sale on eBay. Good amount watching. 0 sold, 1 available.
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  •  Seller - 1,054+ items sold. 0% negative feedback. Top-Rated Plus! Top-Rated Seller, 30-day return policy, ships in 1 business day with tracking.

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