New Old Stock! - New In Box!
(1 Quad) 4 - Closely Matched Sylvania 6V6GT Tubes
SUPER STRONG
Matched at over 105+% of NEW
Tested on a NEW Digital Maxi Matcher Power II Tube Tester
Confirmed on a Hickok 539B Tester
I use the DIGITAL Maxi Matcher Power II Tester
to locate balanced tubes and match them.
(Maxi Matcher uses their own proprietary (GM) Micromhos number value system,
which can not
be used to compare to original factory specifications.)
I then use the Hickok 539B to confirm the test results and provide an
usable number so that you can compare
to the manufacturers New Old Stock Factory Requirements.
Please see photos with the Hickok test results.
Each tube exceeds the Sylvania Factory Specifications.
All have the Same Date Code of HK = 10/1961
Sylvania's NEW Factory Specifications were
for each tube to be at least 4100 micromhos when manufactured.
Hickok's 539B Specifications state that any tube over
2600 micromhos is good to use.
These tubes tested at a SUPER STRONG
Minimum of 4300 micromhos and Higher.
All 4 tubes are within 5% of each other tubes rating.
I included a random sampling of photos from the tube
testing process that shows each tube tested at a minimum
of 4300 micromhos or Higher.
This sale is for 4 Matched (One Quad) of Tubes.
I do have another Quad of these tubes in the event
you would like to buy additional sets.
Several photos are to show that 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).
An adult must sign for these tubes before they will be delivered.
The tubes will also be shipped insured, therefore causing a higher shipping cost than normal.
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.
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 4 Matched set
