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Audio Tube Store


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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-G $50.00 CBS / Hytron 110% / 110% --- NOS (wb) ---
1 5U4-G $50.00 National Union 100% / 100% --- NOS (wb) ---
1 5U4-G $20.00 Delco 100% / 100% --- used (rb) ---
1 5U4-G $20.00 GE 100% / 100% --- used (rb) ---
1 5U4-G $20.00 GE 100% / 100% --- used (rb) ---
1 5U4-G $20.00 GE 100% / 100% --- used (wb) ---
1 5U4-G $20.00 GE 100% / 100% --- used (rb) JAN
1 5U4-G $20.00 CBS 105% / 105% --- used (rb) JAN
1 5U4-G $20.00 Emerson 100% / 100% --- used (rb) damaged box
1 5U4-G $20.00 Rogers 100% / 100% --- used (rb) damaged box
1 5U4-G $20.00 Crosley 105% / 105% --- used (rb) ---
1 5U4-G $20.00 Admiral 100% / 100% --- used (rb) ---
1 5U4-G $15.00 unknown 100% / 100% --- used (rb) damaged box
1 5U4-G $12.00 GE 95% / 95% --- used (L) ---
1 5U4-G $12.00 S.R.L. Inc 100% / 95% --- used (L) ---
1 5U4-G $12.00 Hallicrafters 100% / 95% --- used (L) ---
1 5U4-G $12.00 Rad-Tel 95% / 95% --- used (L) ---
1 5U4-G $10.00 S.R.L. Inc. 90% / 90% --- used (L) ---
1 5U4-G $10.00 Delco 90% / 100% --- used (L) ---
1 5U4-G $10.00 Stromberg Carlson 90% / 85% --- used (L) ---
1 5U4-G $7.50 Premier 80% / 100% --- used (L) ---
1 5U4-G $7.50 Admiral 80% / 80% --- used (L) (ST) --- (au-10A)
1 5U4-G $7.50 Westinghouse 80% / 90% --- used (L) (cat:403-248 : au-10A)
1 5U4-G $7.50 Emerson / Viking 95% / 100% --- used (rb) (ST) loose base (cat:410-28 : au-10A)
1 5U4-G $5.00 GE 70% / 70% --- used (L) (cat:402-4 : au-10A)

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