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AUTHENTIC 1950's

REAL N.O.S. AMPLITREX TESTED

with documented test visuals

Made by SYLVANIA U.S.A. 

labelled for

G.E - GENERAL ELECTRIC CO.

NOS GE 5751 BLACK-PLATE  

3-MICA D-GETTER

1950's TRIPLE-MICA

Here's your chance to upgrade to a SYLVANIA 5751 TUBE!

5751 = ECC83 = 12AX7WA

5751 (12AX7) SYLVANIA BLACK-PLATE TRIPLE 3-MICA D-GETTER 1950's TUBE LABELLED GE - Picture 1 of 10

ALL ACTUAL PICTURES

TRIPLE-MICA BLACK-PLATE

RARE "D" GETTERS

5751 IS A SENSIBLE EQUIVALENT TO 

12AX7 - ECC803S - ECC83 - 12AX7WA - CV4017 - CK551WA

ALL PICTURES ARE OF THE ACTUAL TUBE(S) YOU WILL RECEIVE

Premium quality dual high-gain triode, similar to the 12AX7. 

Mu lowered to 70, heater current raised to 175mA per section. 

Heaters can be parallel connected for 6.3V, 350mA operation.

5751 "SYLVANIA USA" 5751

TRIPLE-MICA MILITARY-SPEC CONSTRUCTION

ALL PICTURES ARE OF THE ACTUAL TUBE YOU WILL RECEIVE

 
 5751 (12AX7) SYLVANIA BLACK-PLATE TRIPLE 3-MICA D-GETTER 1950's TUBE LABELLED GE - Picture 10 of 10

100%/100% PLUS!

TESTED IN THE "TRUE" 5751 SETTINGS

(AVAILABLE)

TUBE 1:

1,300 / 1,200 mA/V (106% / 100%)

1.1mA / 1.1mA (100%/100%)


5751 (12AX7) SYLVANIA BLACK-PLATE TRIPLE 3-MICA D-GETTER 1950's TUBE LABELLED GE - Picture 3 of 10

ALL PICTURES ARE OF THE ACTUAL TUBE YOU WILL RECEIVE

QUITE RARE NOS MATCHED-TRIODE TUBE

BALANCED & MATCHED TRIODES

 
GREAT SYLVANIA 5751 TUBE from USA! 

TUBE HAS THE "SYLVANIA STENCIL-ETCH 5751 U.S.A." 

ALL PICTURES ARE OF THE ACTUAL TUBE YOU WILL RECEIVE

YOU CAN NOT GO WRONG IN YOUR GUITAR AMP OR AUDIO AMP WITH A SYLVANIA 5751 USA MADE TUBE!

CERTIFIED LOW-NOISE TESTED

 TubeMuseum tested tubes takes the guesswork out of the process of selection delivering you the best Audio tubes that there possibly can be. 

CERTIFIED LOW-NOISE TESTED

TERMS & CONDITIONS OF SALE

Domestic & International Buyer's Terms of Auction

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. We do not low declare and we insure for full value.


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. Absolutely NO RETURNS on special orders or best-offer deals. 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

No zero (0) status bidders without permission, or we reserve the right to cancel your bid. Buyer is responsible for all import duties at price paid for item(s).

TUBEMUSEUM NEW YORK

1950's SYLVANIA USA 5751 BLACK-PLATE

3-MICA Phenomenal TUBE!

phe·nom·e·nal/fəˈnämənəl

1. Very remarkable; extraordinary.

2. Perceptible by the senses or through immediate experience.


NOTICE: 

All text & images © 2002-2025 Copyright © of The Tube Museum New York ©

All Rights Reserved


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 © (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 ©.


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.


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