Historic TubeMuseum, Tuxedo Park, New York Established in 1928 as a premier research facility in Tuxedo Park, New York, that attracted such brilliant and most visionary minds of the twentieth century - Albert Einstein, Werner Heisenberg, James Franck, Niels Bohr and Enrico Fermi to name a few. The Tuxedo Park lab attracted these top-flight scientists who experimented with audio, sound, time measurement, and radar waves. He turned this Tuxedo Park laboratory into a meeting place for the most visionary minds of the twentieth century; Albert Einstein, and the aforementioned scientists. Today this location is the home of The Tube Museum New York. ( featured on Wikipedia® )
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TUBEMUSEUM NEW YORK
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DATE-CODES AND TEST MEASUREMENTS LISTED BELOW OF THE TUBES YOU WILL RECEIVE
AMPLITREX AT-1000 DIGITALLY TESTED RAYTHEON USA VT-231 6SN7GT TUBES
ACTUAL FEEDBACK FROM OUR 6SN7-GT TUBES:
| Feedback | From | When | |
 | Great eBay seller. A+ | Buyer | During past month |
| NOS SYLVANIA 6SN7-GTA 6SN7 6SN7GT CHROME-TOP MATCHED PAIR BLACK PLATE Tubes 1954 (#291497564203) |
| Feedback | From | When | |
| Excellent tubes, well packed and arrived fast. Thanks. | Buyer | During past month |
| NOS SYLVANIA 6SN7-GTA 6SN7 6SN7GT CHROME-TOP MATCHED PAIR BLACK PLATE Tubes 1954 (#291497564203) |
| Feedback | From | When | |
| Fantastic Service as Usual... Great Tubes. Highly Recommended Seller. | Buyer | During past month |
| NOS SYLVANIA 6SN7-GTA 6SN7 6SN7GT CHROME-TOP MATCHED PAIR BLACK PLATE Tubes 1954 (#291497564203) |
| Feedback | From | When | |
| EXCELLENT!!! | Buyer | During past month |
| NOS 5692 6SN7 Perfect Low Noise SINGLE TUBE BLACK PLATE Audio Class Tubes |
| Good tube, Amazing Sound, cannot believe they were from 1950's and can still work well | Buyer: <> | |
| SYLVANIA NOS 6SN7GT 6SN7 LowNoise Matched BLACK PLATE Tubes 1940 for Cary SLP 05 (#290883848934) |
| Item # : | 231073299926 |
| Sale price: | $149.98 |
| End time: | |
| Everything checks out, Thank you | Buyer | |
| SYLVANIA 6SN7GT 6SN7 3-HOLE 6SN7W CHROME-TOP "SHORT-BOTTLE" MATCHED USA Tubes (#231073299926) | US $149.98 |
BID 1 FOR A PAIR!
RAYTHEON USA
MILITARY VT-231
Made in USA in 1944
SEVENTY-THREE (73) YEAR-OLD WWII 1944 RAYTHEON USA TUBES!
RATHEON JAN-CRP-6SN7GT / VT-231
BLACK-PLATES
EXCEPTIONALLY TESTING & RARE
AMPLITREX TESTED @ >100% / 115%+
PAIR 1: 3,400/3,000 & 3,300/3,000 (AVAILABLE)*
PAIR 2: 3,000/3,000 & 3,000/3,000 (AVAILABLE)*
PAIR 3: 3,000/3,000 & 3,000/2,950 (AVAILABLE)*
PAIR 4: 3,000/2,900 & 2,800/2,700 (AVAILABLE)*
SPECS: 3,000 = 115%, 2600 = 100%, MIN = 1600
*NOTE: ALL TUBES HAVE A "G" HAND-ETCHED ON THE BASES
IN THE U.S.ARMY/NAVY BACK THEN, THE J.A.N (JOINT ARMY/NAVY) RADIO ENGINEERS WOULD HAND-ETCH "G" FOR GOOD ON THE PRE-SCREENED & TESTED TUBES.
THE INSTITUTE OF RADIO ENGINEERS (IRE): The 1940s electronics rose to a new prominence as governments throughout the world organized their scientists and engineers to devise technologies for use in World War II. One set of efforts produced pioneering electronic digital computers such as "COLOSSUS" in England and ENIAC in the United States that used thousands of VACUUM TUBES. An even larger effort, centered on the euphemistically named RADIATION LAB established at MIT, developed RADAR as an important war tool. To the chagrin of IRE, physicists played a far more prominent role in these advances than engineers.
Dual Triode Tested ELECTRICAL Pair
|
Sub-bass (10Hz - 60Hz) |
CHECKED & PASSED |
|
Mid-bass (80Hz - 200Hz) |
CHECKED & PASSED |
| Midrange (200Hz - 3,000Hz) |
CHECKED & PASSED |
|
High-frequencies (3,000Hz on up) |
CHECKED & PASSED |
BLACK-PLATES
…"Best described as having a euphonic sonic signature...
Pervasive tube warmth that blankets the midrange irrespective of the program material falls in this category, and has proven to be a siren call for many 6SN7-GT tube-o-philes.
Overly liquefying harmonic textures make these tubes a real keeper"…..
SEVENTY-THREE (73) YEAR-OLD WWII 1944 RAYTHEON USA TUBES!
PASSED THE AMPLITREX DIGITAL TESTS = NO HEATER-TO-CATHODE LEAKS!
Low-Noise Tested Microphonic Free
No H-to-K Leakage (Heater-to-Cathode) No leaks (0) zero!
Actual tube was tested on the State-of-the-Art AMPLITREX AT-1000 Electron Tube Test System
CERTIFIED ULTRA-LOW-NOISE MUSEUM SPECIMENS
TubeMuseum tested tubes takes the guesswork out of the process of selection delivering you the best Audio tubes that there possibly can be.
Terms of Auction
Per eBay's terms of service which every eBay account holder must agree to as part of being an eBay member, a bid is a legally binding contract. Please read the Terms & Conditions carefully before bidding. By bidding on this auction, you understand and agree to eBay's terms of service as well as all terms and conditions mentioned here.
Buyer pays all shipping, Item must be in original condition including cosmetic lettering on tubes so handle with white-glove care, un-used with all original boxes, packing material, environmentally safe cornstarch pellets, and shipping box. ALL RETURNS subject to a 10% handling charge. Absolutely NO RETURNS on special orders or best-offer deals. All sales are final with NO RETURNS on self installed mic tubes.
All exchanges must be pre-paid and returned in original packing, complete with no sign of wear or abuse, exactly the same condition as it was when you received it. In the event that the product is not in the same condition, and does not test the same as you received it, you will be subject to a refusal and return, a determined restocking fee, repair charge, or disqualification. RETURN AUTHORIZATION (RA) number and instructions is required before sending any items. Shipping and handling charges are non-refundable.
We do not guarantee that your tester, or your tester's measurements will be the same as the Amplitrex AT-1000. Older testers, different testers, or the same tester may report different test measurements, and may not measure the same tube meaningfully (due to current dependency), accurately (due to calibration difficulties) or consistently (due to internal circuit drift) There is no warranty or returns based on what any other tube tester reports.
THE COST OF ALL USA SHIPPING INCLUDES INSURANCE, TRACKING NUMBER AND DELIVERY CONFIRMATION
THE COST OF ALL USA SHIPPING INCLUDES INSURANCE, TRACKING NUMBER AND DELIVERY CONFIRMATION
ADD JUST $3.99 FOR USPS PRIORITY MAIL 2-DAY IN USA!
"PRIORITY or EXPRESS SHIPPING" required for certain countries, Italy, Russia, Indonesia, Australia, Pacific Rim, and others.(Please check first before you bid or we reserve the right to cancel your bid)
"PRIORITY or EXPRESS SHIPPING" required for certain countries, Italy, Russia, Indonesia, Australia, Pacific Rim, and others.(Please check first before you bid or we reserve the right to cancel your bid)
International Buyers - Please note: Import duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to bidding or buying.
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TUBEMUSEUM NEW YORK
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BID 1 FOR THE ONLY PAIR!
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