New Old Stock! - New in Box!

ONE (1)  NOS - 1951 Hytron/CBS Balanced 6SL7GT Tube

This sale is for ONE (1)  NOS  Closely Balanced Tube

SUPER STRONG

Balanced at over 99% by Maxi PreAmp II Tester 
GM tested by Hickok 539B at 112% of NEW

 Tested on a NEW Digital Maxi Matcher PreAmp II Tube Tester
Confirmed on a Hickok 539B Tester

Each tube exceeds 
Hytron's  Factory Specifications.

Black 2 Hole Stapled w Smooth Plates with Bottom Getter

I use the DIGITAL Maxi Matcher PreAmp II Tester 
to find balanced tubes and them match them.
(Maxi Matcher uses their own proprietary (GM) Micromhos number value system,
which can not be used to compare to original factory specifications.)

Maxi Matcher PreAmp II Tester results
Tube 1 GM = Side A = 1532   Gain =70.1
Tube 1 GM = Side B = 1540    Gain =70.5

I then use the Hickok 539B to confirm the test results and provide an 
useable number so that you can compare 
to the manufacturers New Old Stock Factory Requirements.
Please see photos with the Hickok test results.


General Electric's Original NEW Factory Specifications were 
for each tube to test at  1600 micromhos when manufactured. 
Hickok's 539B Specifications state that any tube over 
1000 micromhos is good to use.
This tube tested at a SUPER STRONG
1800 micromhos and Higher

 I professionally test every Tube for Sale.
All Tubes are Tested for Noise, Shorts, Leakage, Gas, 
Plate Current, Life Test, and GM or Transconductance (micromhos).


NEW OLD STOCK


I am selling my father's vintage audio collection including his huge inventory of New In Box New Old Stock Tubes. All tubes have been tested and matched on two Hickok Professional Tube Testers. A Hickok 539B and then confirmed on a recently Updated and Calibrated Hickok 752A.


PreAmplifier and Power Tubes are tested on a NEW DIGITAL Maxi Matcher PreAmp II Tester,  and a NEW DIGITAL Maxi Matcher Power Tube II Tester.  Then confirmed on my Hickok 539B


Many of my tubes are marked in silver ink with my reference numbers. No returns will be accepted if the ink has been removed. The ink can easily be removed with alcohol. Please do not remove my reference numbers until you are 100% satisfied with your purchase.


I ship within 1 business day!


Buy with confidence. Please see my 100% feedback since 2008.


This sale is for One Tube.


All photos are incorporated into the description. If you have any questions or would like a further description please ask prior to purchasing and I will be happy to try and answer your questions. I make every effort to answer email ASAP and always within 24 hours.

 

GENERAL TERMS:  PLEASE READ BEFORE MAKING YOUR PURCHASE.

Some of the boxes or items may have shelf wear. Please look at photos closely.

All electronics are now inconspicuously marked to reduce fraudulent claims.


I only ship to eBay confirmed addresses.

If you have any questions or would like a further description please ask prior to purchasing.

Please note that some items sold over $200 may require a signature upon delivery.


I make every effort to ship within 24 hours of payment, depending on post office hours.


Thank you for looking.