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You are bidding on

General Electric 6072-GL \ 12AY7 Vintage Preamp Vacuum Tube
(4) Tubes Available \ (1) Tube Per Bid

Gold Pins, Black plates, round getter, military grade.
True NOS units, totally flawless tubes.

These are the absolute holy grail of 6072 type tubes.
There are only a few of these that were ever produced,
and will work beautifully in your tweed Fender amp, vintage tube microphone, recording or hi-fi gear.

Tubes are balanced, and test especially high, better than new on Hickok 800A.
They are also audio tested in a hifi pre-amplifier by us personally, a service most sellers charge for.

Tube #1 - 1800 \ 1800
Tube #2 - 1900 \ 1850
Tube #3 - 1850 \ 1900
Tube #4 - 1650 \ 1600

New = 1250 \ Minimum Good = 850
No Shorts or leaks.



The 6072 is a low noise, sturdy tube built for military use, and was specifically constructed and pre tested to have no microphonic properties.
6072A are the top tier cream of the crop for vintage Fender Tweed amplifiers, radios, and hi-fi preamps.
Most Tweed amps use this type in their V1, V2 or both sections, and you can use this tube to substitute any 12AX7, 12AT7,
or 12AU7 position in any amp, as well as the phase inverter or input stages on many hifi systems.


The 6072 are extremely rare and highly sought after.    Grab a pair from us today before they are gone forever!
We have more great vintage rare tubes listed right now in our store, check our store for details.


**TESTED USING HICKOK 800A - One of the best and most versatile testers ever made.



Note to customer:
 
NOS Tubes:  
"NOS"  is a search term many buyers use on eBay to search for vintage tubes.
This is a widely criticized word that many electronics experts and hobbyists \ enthusiasts
do not like to hear unless the item is brand new, sealed in the box.


When it comes to listing as a seller, sometimes to match your product with a buyer who may be looking for your item, but doesn't
always know the proper terms to search, you must use the terminology most used by the buyer for the product they are looking for.

Many tube buyers only know vintage tubes by the term "NOS" and will not type "vintage" when searching for what they are looking for.
Therefore, when we list "NOS" in the title, we are only describing a vintage tube.  When a tube is new in box, we will combine that with the term "NIB", or "New In Box".
We will also list that the item is "new in box", in the description, or "new without box".
When a tube is not new or we are unable to verify it's use, but still tests like new, we will list "tests like new", or tests in NOS range in the description.

We hope this clears up the title term NOS for some buyers who have or will inquire about this.
We are not trying to misrepresent our items, we are simply attempting to put our listings into the hands of those who want to see them.

Test Results: 
We often are questioned as to why we sometimes do not list test numbers and results.  
There is a good reason for this.  

First, we test all of our tubes, in both a calibrated tube tester, and guitar and vocal preamplifiers.
Our testing practices are stringent, and have given us 10 years of buyer satisfaction in tube sales.

On certain tubes that are used for hi-fi applications, we will list our numbers to show that the triodes are not overtly out of balance,
or we will also list our test numbers when they have been verified by multiple sources including our own.

Still we cannot guarantee exact test results or any test results, under any circumstances. 
This is due to the tube selling community on eBay being taken advantage of for partial refunds by unscrupulous buyers.
This has never happened to us, but has happened to many of our competitors.
Just like with any market, sellers must adapt to circumstances or potential circumstances.

Performance Of Vintage Items: 
We cannot guarantee a vintage item will perform the same with or in your equipment as it did in ours, or that your tester will test tubes the same as ours did.
It is just too much of a grey area to be able to guarantee.  All vintage items are sold as is. 
We list our items honestly and accurately as possible, and are unable to know how a vintage item has been used before accepting a return.
As a result, we have to decide when to accept a return, and as a general rule we only accept returns on non-vintage or unused items.