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TUBEMUSEUM NEW YORK
The Original Historic TubeMuseum, formerly from Tuxedo Park, New York
IMPOSSIBLE TO FIND ANYWHERE NOS
EUROPE HAS STOPPED SHIPPING TO U.S.A.
BECAUSE OF TOO HIGH TARIFFS & POST OFFICES HAVE STOPPED
SHIPPING ANYTHING BUT LETTERS TO U.S.A.!
If you purchase any item that ships from outside the U.S.A., you will need to pay DUTY RATE Receiver or Amplifier Tubes of 35%, Import Fees (TBD) and Processing Fees (TBD).
TARIFFS INCURRED BOTH-WAYS FOR THE SENDER AND RECEIVER
WITH DIFFERENT RATES DEPENDING ON COUNTRY OF ORIGIN WHERE THE ITEM WAS MADE!
ALL TUBE MUSEUM ITEMS SHIP FROM U.S.A. to the U.S.A. at the price you see with NO TARIFFS, & FREE SHIPPING to U.S.A.!
πΊπΈ AMERICANS: AVOID $UPRISES BY BUYING FROM AMERICA! πΊπΈ

PRICE IS FOR THE ONE-TUBE
TUBE MUSEUM QUALITY
EXTREMELY RARE 10M MASTER SERIES
Made in Great Britain "SEE REAL TESTS" ECC81
MATCHED DOUBLE-TRIODE SINGLE TUBE
MIRROR-MATCHED TRIODES! QUITE RARE!
π¬π§ NOS ECC81 /12AT7 "10M" Master Series π¬π§
The "10M" series is an older, long-life tube from Mullard, designed for a lifespan exceeding 10,000 hours!
This RARE 1960 Made in England Mullard 10M Series ECC81 tube will NEVER be made again and will only go up in value as the years go by, just like ECC801S! Great investment tube that you can sonically enjoy!

10M EPIC YELLOW PRINT - THE SINGLE TUBE YOU WILL RECEIVE are these in the pictures!!
POPULAR SOLD IN THE COUNTRY OF VIET BUYERS ARE SNATCHING UP THESE TUBES AS THEY SUPPOSEDLY ARE SELLING FOR DOUBLE OUR ASKING PRICE!
Made in Blackburn
π¬π§ UNITED KINGDOM π¬π§
in 1960
12AT7 / ECC81
REAL NOS SINGLE TUBE

ADEQUATE PRINT TO IDENTIFY REAL 10M - ALL PICTURES ARE THE TUBE YOU WILL RECEIVE!
Amplitrex AT-1000 TESTED with ACTUAL TEST RESULTS OF THE TUBE YOU WILL PROMPTLY RECEIVE!

MULLARD MASTER 10M SERIED WITH BOX & 2-YEAR WARRANTY CARD STILL ATTACHED!
TUBE 1: (AVAILABLE!)

Tube 1 (Side/Triode 1)
TUBE 1: 5,400/5,400 &
11.3mA/10.3mA WOW!
SYMMETRICALLY BALANCED!

Tube 1 (Side/Triode 2)
*10.0mA/10.0mA = 100% factory Spec.
How to read the Amplitrex AT1000 readout: Results 2 is triode 1, and Results 1 is triode 2.
TubeMuseum tested tubes takes the guesswork out of the process of selection delivering you the best Audio tubes that there possibly can be.
PRICE IS FOR THE ONE (1) SINGLE TUBE !
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TUBEMUSEUM NEW YORK
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NOTICE:
All text & images Β© 2002-2026 Copyright Β© of The Tube Museum New York Β©
All Rights Reserved
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.
By entering this site you are agreeing to be bound by the terms of this agreement. All photographs and text appearing in the Tube Museum New York (TubeMuseumUSA) site(s) are the exclusive property of The Tube Museum New York Β© (except where stated otherwise) and are protected under international copyright laws and treaties. They are made available for your personal viewing enjoyment only. No images or unique text are within the Public Domain. The photographs and text may not be copied, reproduced, redistributed, manipulated, projected, used, or altered in any way without the prior express written permission of The Tube Museum New York Β©.
The unauthorized reproduction or distribution of a copyrighted work, pictures, and text is illegal. Criminal copyright infringement, including infringement without monetary gain, is investigated by eBay and appropriate action will be taken. Make sure your listing follows these guidelines. If it doesn't, it may be removed, and you may be subject to a range of other actions, including limits of your buying and selling privileges and suspension of your account. If you're not using pictures or text from the eBay product catalog, you should use your own when creating a listing. If you're using someone else's photos and text, make sure you have permission from the rights owner or creator.