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Don't see what you need? Contact us. We have many more tubes that are not yet listed. We also have new and good used tubes in most other numbers including preoctal, globe/balloon, octal, loctal, miniature, subminiature, metal, power, transmitter tubes and many more.

MDB Ventures Audio Tubes
Qty
Avail
Tube
Type
Price
Each
Tube
Brand
Emission
Strength
Mutual
Conduct

Desc

Notes
1 5U4-GA $15.00 Raytheon 110% / 110% --- NOS (wb) ---
1 5U4-GA $7.50 GE 105% / 105% --- used (rb) ---
1 5U4-GA $7.50 GE 110% / 110% --- used (rb) ---
1 5U4-GA $7.50 Raytheon 110% / 110% --- used (rb) ---
1 5U4-GB $15.00 Tung-Sol 105% / 105% --- used (rb) ---
1 5U4-GB $12.00 Tung-Sol 100% / 100% --- used (ob) ---
1 5U4-GB $7.50 GE 110% / 110% --- used (ob) ---
1 5U4-GB $7.50 GE 115% / 115% --- used (rb) ---
1 5U4-GB $7.50 GE 110% / 110% --- used (rb) ---
1 5U4-GB $7.50 GE 110% / 110% --- used (rb) ---
1 5U4-GB $7.50 GE 110% / 110% --- used (rb) ---
1 5U4-GB $7.50 GE 110% / 110% --- used (ob) ---
1 5U4-GB $7.50 GE 110% / 110% --- used (rb) ---
1 5U4-GB $7.50 GE 110% / 110% --- used (rb) ---
1 5U4-GB $7.50 GE 115% / 110% --- used (rb) ---
1 5U4-GB $7.50 GE 110% / 110% --- used (rb) ---
1 5U4-GB $7.50 GE 110% / 110% --- used (rb) ---
1 5U4-GB $7.50 GE 110% / 105% --- used (rb) ---
1 5U4-GB $7.50 GE 100% / 105% --- used (rb) ---
1 5U4-GB $7.50 GE 105% / 105% --- used (rb) ---
1 5U4-GB $7.50 GE 100% / 100% --- used (rb) ---
1 5U4-GB $7.50 GE 100% / 100% --- used (rb) ---
1 5U4-GB $7.50 GE 100% / 100% --- used (ob) ---
1 5U4-GB $7.50 Sylvania 110% / 110% --- used (rb) ---
1 5U4-GB $7.50 Sylvania 110% / 110% --- used (rb) ---
1 5U4-GB $7.50 Sylvania 110% / 110% --- used (rb) ---
1 5U4-GB $7.50 Sylvania 110% / 110% --- used (rb) ---
1 5U4-GB $7.50 Sylvania 110% / 110% --- used (rb) ---
1 5U4-GB $7.50 Sylvania 110% / 110% --- used (rb) ---
1 5U4-GB $7.50 Sylvania 115% / 115% --- used (rb) ---
1 5U4-GB $7.50 Sylvania 110% / 110% --- used (rb) ---
1 5U4-GB $7.50 Sylvania 110% / 110% --- used (rb) ---
1 5U4-GB $7.50 Sylvania 110% / 110% --- used (rb) ---
1 5U4-GB $7.50 Sylvania 110% / 110% --- used (rb) ---
1 5U4-GB $7.50 Sylvania 110% / 110% --- used (rb) ---
1 5U4-GB $7.50 Sylvania 110% / 110% --- used (rb) ---
1 5U4-GB $7.50 Sylvania 110% / 110% --- used (rb) ---
1 5U4-GB $7.50 Sylvania 110% / 110% --- used (rb) ---
1 5U4-GB $7.50 Sylvania 110% / 110% --- used (rb) ---
1 5U4-GB $7.50 Sylvania 110% / 110% --- used (wb) ---
1 5U4-GB $7.50 Sylvania 110% / 110% --- used (rb) ---
1 5U4-GB $7.50 Sylvania 110% / 110% --- used (rb) ---
1 5U4-GB $7.50 Sylvania 110% / 110% --- used (rb) ---
1 5U4-GB $7.50 Sylvania 110% / 110% --- used (rb) ---
1 5U4-GB $7.50 Sylvania 110% / 110% --- used (rb) ---
1 5U4-GB $7.50 Sylvania 110% / 110% --- used (rb) cat:402-409
1 5U4-GB $7.50 Sylvania 105% / 110% --- used (rb) ---
1 5U4-GB $7.50 Sylvania 105% / 105% --- used (rb) US Navy
1 5U4-GB $7.50 Sylvania 105% / 105% --- used (rb) ---
1 5U4-GB $7.50 Sylvania 105% / 105% --- used (rb) ---
1 5U4-GB $7.50 Sylvania 105% / 105% --- used (rb) ---
1 5U4-GB $7.50 Sylvania 105% / 105% --- used (rb) ---
1 5U4-GB $7.50 Sylvania 100% / 100% --- used (rb) ---
1 5U4-GB $7.50 Sylvania 100% / 100% --- used (rb) ---
1 5U4-GB $7.50 Raytheon 110% / 110% --- used (rb) ---
1 5U4-GB $7.50 Raytheon 110% / 110% --- used (rb) ---
1 5U4-GB $7.50 Raytheon 110% / 110% --- used (rb) ---
1 5U4-GB $7.50 Raytheon 110% / 110% --- used (rb) ---
1 5U4-GB $7.50 Raytheon 110% / 110% --- used (rb) ---
1 5U4-GB $7.50 Raytheon 110% / 110% --- used (rb) ---
1 5U4-GB $7.50 Raytheon 110% / 110% --- used (rb) ---
1 5U4-GB $7.50 Raytheon 110% / 105% --- used (rb) ---
1 5U4-GB $7.50 Raytheon 105% / 105% --- used (rb) ---
1 5U4-GB $7.50 Raytheon 100% / 100% --- used (rb) ---
1 5U4-GB $7.50 Rauland 110% / 110% --- used (ob) ---
1 5U4-GB $7.50 Rauland 110% / 110% --- used (ob) ---
1 5U4-GB / GA $7.50 CBS 110% / 110% --- used (rb) ---
1 5U4-GB / GA $7.50 CBS 100% / 100% --- used (ob) damaged box
1 5U4-GB $7.50 CBS 100% / 100% --- used (ob) damaged box
1 5U4-GB $7.50 Philco 110% / 110% --- used (rb) ---
1 5U4-GB $7.50 Philco 110% / 105% --- used (wb) ---
1 5U4-GB $7.50 Packard Bell 110% / 105% --- used (rb) ---
1 5U4-GB $7.50 Westinghouse 110% / 110% --- used (ob) ---
1 5U4-GB $7.50 Westinghouse 110% / 110% --- used (rb) ---
1 5U4-GB $7.50 Zenith 110% / 110% --- used (rb) ---
1 5U4-GB $7.50 Olympic 105% / 105% --- used (rb) ---
1 5U4-GB $7.50 Dumont 110% / 110% --- used (rb) ---
1 5U4-GB $7.50 Emerson 110% / 110% --- used (rb) ---
1 5U4-GB $7.50 Cornell 110% / 110% --- used (rb) ---
1 5U4-GB $7.50 Silvertone 110% / 110% --- used (rb) ---
1 5U4-GB $7.50 Baldwin 110% / 110% --- used (rb) ---
1 5U4-GB $7.50 Fender 110% / 110% --- used (rb) ---
1 5U4-GB $7.50 Devry Tech Inst. 110% / 110% --- used (rb) ---
1 5U4-GB $7.50 Motorola 105% / 105% --- used (ob) damaged box
1 5U4-GB $7.50 Amperex 105% / 105% --- used (wb) ---
1 5U4-GB $7.50 Triad 105% / 105% --- used (ob) ---
1 5U4-GB $7.50 Westinghouse 110% / 110% --- used (rb) ---
1 5U4-GB $7.50 Dixie 110% / 110% --- used (ob) ---
1 5U4-GB / 5AS4-A $20.00 GE 110% / 110% --- NOS (ob) ---
1 5U4-GB / 5AS4-A $20.00 GE 110% / 110% --- NOS (ob) ---
1 5U4-GB / 5AS4-A $20.00 GE 110% / 110% --- NOS (ob) ---
1 5U4-GB / 5AS4-A $20.00 GE 110% / 110% --- NOS (ob) ---
1 5U4-GB / 5AS4-A $20.00 GE 110% / 110% --- NOS (ob) damaged box
1 5U4-GB / 5AS4-A $10.00 GE 110% / 110% --- used (ob) ---
1 5U4-GB / 5AS4-A $10.00 Sylvania 110% / 110% --- used (rb) ---
1 5U4-GB / 5AS4-A $10.00 Raytheon 110% / 110% --- used (rb) ---
1 5U4-GB / 5AS4-A $10.00 GE 110% / 110% --- used (rb) ---
1 5U4-GB / 5AS4-A $10.00 GE 110% / 110% --- used (ob) ---
1 5U4-GB / 5AS4-A $10.00 GE 105% / 105% --- used (rb) ---
1 5U4-GB / 5AS4-A $10.00 GE 105% / 105% --- used (rb) ---
1 5U4-GB / 5AS4-A $10.00 GE 105% / 105% --- used (rb) ---
1 5U4-GB / 5AS4-A $10.00 GE 100% / 100% --- used (rb) ---
1 5U4-GB / 5AS4-A $10.00 GE 100% / 100% --- used (rb) ---

Notes:
(OB) = original box, (rb) = relabeled/replacement box, (wb) = white box, (L) = loose (no box), (pl) = paper label on tube (original or third party)
(H) = tested on Hickok 539A
(ST)=ST Style, (GT)=GT Style, (TT)=Tall Tubular, (M7)=7pin miniature, M9=9pin miniature, (SM)=subminiature, JAN = Military
Emission Strength = Percentage of emission measured on Eico 666 tube tester
(Emission Strength = 100% baseline reference, >80%:good, >60%:fair >40%=diode good).
Gm = Mutual conductance measured on Hickok 533 tube tester; Except (H)=tested on Hickok 539A
(Gm = measured/baseline, measured1:measured2/baseline, measured1:measured2/baseline1:baseline2).


How To Order:

Purchasing our audio tubes is easy.
Just send us an email indicating the tubes (including quantities) you want.
We will let you know the total price including shipping and handling.

Shipping and Handling Information

Contact MDB Ventures
sales@mdbventures.com
or
sales@fourwater.com

Due to the highly volatile nature of the tube business, all Prices are subject to change without notice.


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Contact MDB Ventures
sales@mdbventures.com
or
sales@fourwater.com