Welcome to MDB Ventures 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
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1 | 6W4-GT | $2.00 | Sylvania | 110% | --- | NOS (OB) | yellow lettering |
1 | 6W4-GT | $2.00 | Sylvania | 110% | --- | NOS (OB) | yellow lettering |
1 | 6W4-GT | $2.00 | Sylvania | 110% | --- | NOS (OB) | yellow lettering |
1 | 6W4-GT | $2.00 | Sylvania | 110% | --- | NOS (OB) | yellow lettering |
1 | 6W4-GT | $2.00 | Sylvania | 110% | --- | NOS (OB) | yellow lettering |
1 | 6W4-GT | $2.00 | Sylvania | 110% | --- | NOS (OB) | yellow lettering |
1 | 6W4-GT | $2.00 | Sylvania | 110% | --- | NOS (OB) | yellow lettering |
1 | 6W4-GT | $2.00 | Sylvania | 110% | --- | NOS (OB) | yellow lettering |
1 | 6W4-GT | $2.00 | Sylvania | 110% | --- | NOS (OB) | yellow lettering |
1 | 6W4-GT | $2.00 | Sylvania | 110% | --- | NOS (OB) | yellow lettering |
1 | 6W4-GT | $2.00 | Sylvania | 110% | --- | NOS (OB) | yellow lettering |
1 | 6W4-GT | $2.00 | Sylvania | 110% | --- | NOS (OB) | yellow lettering |
1 | 6W4-GT | $2.00 | Sylvania | 110% | --- | NOS (OB) | yellow lettering |
1 | 6W4-GT | $2.00 | Sylvania | 115% | --- | NOS (OB) | yellow lettering |
1 | 6W4-GT | $2.00 | Sylvania | 115% | --- | NOS (OB) | yellow lettering |
1 | 6W4-GT | $2.00 | Sylvania | 115% | --- | NOS (OB) | yellow lettering |
1 | 6W4-GT | $2.00 | Sylvania | 115% | --- | NOS (OB) | yellow lettering |
1 | 6W4-GT | $2.00 | Sylvania | 115% | --- | NOS (OB) | yellow lettering |
1 | 6W4-GT | $2.00 | Sylvania | 115% | --- | NOS (OB) | yellow lettering |
1 | 6W4-GT | $2.00 | Sylvania | 115% | --- | NOS (OB) | yellow lettering |
1 | 6W4-GT | $2.00 | Sylvania | 115% | --- | NOS (OB) | yellow lettering |
1 | 6W4-GT | $2.00 | Sylvania | 115% | --- | NOS (OB) | yellow lettering - damaged box |
1 | 6W4-GT | $2.00 | Sylvania | 115% | --- | NOS (OB) | red lettering |
1 | 6W4-GT | $2.00 | Sylvania | 110% | --- | NOS (OB) | red lettering - canada |
1 | 6W4-GT | $2.00 | Sylvania | 110% | --- | NOS (OB) | green lettering |
1 | 6W4-GT | $2.00 | Sylvania | 115% | --- | NOS (OB) | green lettering |
1 | 6W4-GT | $2.00 | Sylvania | 115% | --- | NOS (OB) | green lettering |
1 | 6W4-GT | $2.00 | GE | 110% | --- | NOS (OB) | white lettering |
1 | 6W4-GT | $2.00 | GE | 110% | --- | NOS (OB) | white lettering |
1 | 6W4-GT | $2.00 | GE | 110% | --- | NOS (OB) | white lettering |
1 | 6W4-GT | $2.00 | GE | 110% | --- | NOS (OB) | white lettering |
1 | 6W4-GT | $2.00 | GE | 110% | --- | NOS (OB) | white lettering |
1 | 6W4-GT | $2.00 | GE | 110% | --- | NOS (OB) | white lettering |
1 | 6W4-GT | $2.00 | GE | 110% | --- | NOS (OB) | white lettering |
1 | 6W4-GT | $2.00 | GE | 110% | --- | NOS (OB) | white lettering |
1 | 6W4-GT | $2.00 | GE | 110% | --- | NOS (OB) | white lettering |
1 | 6W4-GT | $2.00 | GE | 110% | --- | NOS (OB) | white lettering |
1 | 6W4-GT | $2.00 | GE | 115% | --- | NOS (OB) | white lettering |
1 | 6W4-GT | $2.00 | GE | 115% | --- | NOS (OB) | white lettering |
1 | 6W4-GT | $2.00 | GE | 115% | --- | NOS (OB) | white lettering |
1 | 6W4-GT | $2.00 | GE | 115% | --- | NOS (OB) | white lettering |
1 | 6W4-GT | $2.00 | GE | 115% | --- | NOS (OB) | white lettering |
1 | 6W4-GT | $2.00 | GE | 115% | --- | NOS (OB) | white lettering |
1 | 6W4-GT | $2.00 | GE | 115% | --- | NOS (OB) | white lettering |
1 | 6W4-GT | $2.00 | GE | 115% | --- | NOS (OB) | white lettering |
1 | 6W4-GT | $2.00 | GE | 115% | --- | NOS (OB) | white lettering |
1 | 6W4-GT | $2.00 | GE | 115% | --- | NOS (OB) | white lettering |
1 | 6W4-GT | $2.00 | GE | 115% | --- | NOS (OB) | white lettering |
1 | 6W4-GT | $2.00 | GE | 110% | --- | NOS (OB) | white lettering - canada |
1 | 6W4-GT | $2.00 | GE | 110% | --- | NOS (OB) | red lettering |
1 | 6W4-GT | $2.00 | RCA | 110% | --- | NOS (OB) | silver lettering |
1 | 6W4-GT | $2.00 | RCA | 120% | --- | NOS (OB) | silver lettering |
1 | 6W4-GT | $2.00 | RCA | 120% | --- | NOS (OB) | silver lettering |
1 | 6W4-GT | $2.00 | RCA | 120% | --- | NOS (OB) | silver lettering |
1 | 6W4-GT | $2.00 | RCA | 120% | --- | NOS (OB) | silver lettering |
1 | 6W4-GT | $2.00 | RCA | 120% | --- | NOS (OB) | silver lettering |
1 | 6W4-GT | $2.00 | RCA | 120% | --- | NOS (OB) | silver lettering |
1 | 6W4-GT | $2.00 | RCA | 120% | --- | NOS (OB) | silver lettering |
1 | 6W4-GT | $2.00 | RCA | 120% | --- | NOS (OB) | silver lettering |
1 | 6W4-GT | $2.00 | RCA | 120% | --- | NOS (OB) | silver lettering |
1 | 6W4-GT | $2.00 | RCA | 130% | --- | NOS (OB) | silver lettering |
1 | 6W4-GT | $2.00 | RCA | 115% | --- | NOS (OB) | silver lettering |
1 | 6W4-GT | $2.00 | RCA | 120% | --- | NOS (OB) | red lettering |
1 | 6W4-GT | $2.00 | RCA | 120% | --- | NOS (OB) | red lettering |
1 | 6W4-GT | $2.00 | RCA | 120% | --- | NOS (OB) | red lettering |
1 | 6W4-GT | $2.00 | RCA | 120% | --- | NOS (OB) | red lettering |
1 | 6W4-GT | $2.00 | RCA | 120% | --- | NOS (OB) | red lettering |
1 | 6W4-GT | $2.00 | RCA | 120% | --- | NOS (OB) | red lettering |
1 | 6W4-GT | $2.00 | RCA | 115% | --- | NOS (OB) | red lettering |
1 | 6W4-GT | $2.00 | CBS | 115% | --- | NOS (OB) | --- |
1 | 6W4-GT | $2.00 | CBS | 115% | --- | NOS (OB) | --- |
1 | 6W4-GT | $2.00 | Philco | 115% | --- | NOS (OB) | --- |
1 | 6W4-GT | $2.00 | Raytheon | 115% | --- | NOS (OB) | --- |
1 | 6W4-GT | $2.00 | Raytheon | 110% | --- | NOS (OB) | --- |
1 | 6W4-GT | $2.00 | Raytheon | 110% | --- | NOS (OB) | damaged box |
1 | 6W4-GT | $2.00 | Raytheon | 110% | --- | NOS (OB) | --- |
1 | 6W4-GT | $2.00 | Raytheon | 115% | --- | NOS (OB) | --- |
1 | 6W4-GT | $2.00 | Tung-Sol | 120% | --- | NOS (OB) | --- |
1 | 6W4-GT | $2.00 | Tung-Sol | 120% | --- | NOS (OB) | --- |
1 | 6W4-GT | $2.00 | Channel Master | 120% | --- | NOS (OB) | --- |
1 | 6W4-GT | $2.00 | Channel Master | 120% | --- | NOS (OB) | --- |
1 | 6W4-GT | $2.00 | Channel Master | 120% | --- | NOS (OB) | --- |
1 | 6W4-GT | $2.00 | Westinghouse | 120% | --- | NOS (OB) | --- |
1 | 6W4-GT | $2.00 | ITT | 115% | --- | NOS (OB) | --- |
1 | 6W4-GT | $2.00 | Rad-Tel | 120% | --- | NOS (OB) | damaged box |
1 | 6W4-GT | $2.00 | Selectron | 120% | --- | NOS (OB) | --- |
1 | 6W4-GT | $2.00 | Arcturus | 120% | --- | NOS (OB) | --- |
1 | 6W4-GT | $2.00 | Arcturus | 120% | --- | NOS (OB) | --- |
1 | 6W4-GT | $2.00 | Hitachi | 115% | --- | NOS (OB) | --- |
1 | 6W4-GT | $1.00 | RCA Victor | 110% | --- | used (rb) | --- |
1 | 6W4-GT | $1.00 | RCA Victor | 110% | --- | used (rb) | --- |
1 | 6W4-GT | $1.00 | RCA | 110% | --- | used (rb) | silver lettering - bronw |
1 | 6W4-GT | $1.00 | RCA | 110% | --- | used (rb) | silver lettering |
1 | 6W4-GT | $1.00 | RCA | 110% | --- | used (rb) | silver lettering |
1 | 6W4-GT | $1.00 | RCA | 110% | --- | used (rb) | silver lettering |
1 | 6W4-GT | $1.00 | RCA | 110% | --- | used (rb) | silver lettering |
1 | 6W4-GT | $1.00 | RCA | 110% | --- | used (rb) | silver lettering |
1 | 6W4-GT | $1.00 | RCA | 110% | --- | used (rb) | silver lettering |
1 | 6W4-GT | $1.00 | RCA | 110% | --- | used (rb) | silver lettering |
1 | 6W4-GT | $1.00 | RCA | 110% | --- | used (rb) | silver lettering |
1 | 6W4-GT | $1.00 | RCA | 115% | --- | used (rb) | silver lettering |
1 | 6W4-GT | $1.00 | RCA | 115% | --- | used (rb) | silver lettering |
1 | 6W4-GT | $1.00 | RCA | 120% | --- | used (rb) | silver lettering |
1 | 6W4-GT | $1.00 | RCA | 120% | --- | used (rb) | silver lettering |
1 | 6W4-GT | $1.00 | RCA | 110% | --- | used (rb) | red lettering |
1 | 6W4-GT | $1.00 | GE | 110% | --- | used (rb) | white lettering |
1 | 6W4-GT | $1.00 | GE | 110% | --- | used (rb) | white lettering |
1 | 6W4-GT | $1.00 | GE | 115% | --- | used (rb) | white lettering |
1 | 6W4-GT | $1.00 | Sylvania | 110% | --- | used (rb) | red lettering |
1 | 6W4-GT | $1.00 | Sylvania | 110% | --- | used (rb) | green lettering |
1 | 6W4-GT | $1.00 | CBS / Columbia | 110% | --- | used (rb) | --- |
1 | 6W4-GT | $1.00 | CBS / Hytron | 110% | --- | used (rb) | --- |
1 | 6W4-GT | $1.00 | CBS / Hytron | 115% | --- | used (rb) | --- |
1 | 6W4-GT | $1.00 | Bendix Radio | 120% | --- | used (rb) | --- |
1 | 6W4-GT | $1.00 | Bendix Radio | 115% | --- | used (rb) | --- |
1 | 6W4-GT | $1.00 | Tung-Sol | 110% | --- | used (rb) | --- |
1 | 6W4-GT | $1.00 | Tung-Sol | 115% | --- | used (rb) | --- |
1 | 6W4-GT | $1.00 | Hytron | 110% | --- | used (rb) | --- |
1 | 6W4-GT | $1.00 | Ken-Rad | 110% | --- | used (rb) | --- |
1 | 6W4-GT | $1.00 | Teletone | 110% | --- | used (rb) | --- (au-72) |
1 | 6W4-GT | $1.00 | Raytheon | 110% | --- | used (rb) | --- (au-72) |
1 | 6W4-GT | $1.00 | Raytheon | 115% | --- | used (rb) | --- (au-72) |
1 | 6W4-GT | $1.00 | Raytheon | 110% | --- | used (rb) | --- (au-72) |
1 | 6W4-GT | $1.00 | Tru-Vac | 110% | --- | used (rb) | --- (au-72) |
1 | 6W4-GT | $1.00 | Tru-Vac | 110% | --- | used (rb) | --- (au-72) |
1 | 6W4-GT | $1.00 | Hi-Lite | 110% | --- | used (rb) | --- (au-72) |
1 | 6W4-GT | $1.00 | Emerson | 110% | --- | used (rb) | --- (au-72) |
1 | 6W4-GT | $1.00 | Arvin | 110% | --- | used (rb) | --- (au-72) |
1 | 6W4-GT | $1.00 | Sonora | 110% | --- | used (rb) | --- (au-72) |
1 | 6W4-GT | $1.00 | Sky-Tron | 110% | --- | used (rb) | --- (au-72) |
1 | 6W4-GT | $1.00 | Cornell | 110% | --- | used (rb) | --- (au-72) |
1 | 6W4-GT | $0.50 | RCA | 100% | --- | used (rb) | silver lettering (au-72) |
1 | 6W4-GT | $0.50 | Silvertone | 100% | --- | used (rb) | --- (au-72) |
1 | 6W4-GT | $0.50 | unknown | 100% | --- | used (rb) | --- (au-72) |
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1 | 25W4-GT | $2.00 | GE | 110% | --- | NOS (OB) | white lettering |
1 | 25W4-GT | $2.00 | GE | 110% | --- | NOS (OB) | white lettering |
1 | 25W4-GT | $2.00 | GE | 110% | --- | NOS (OB) | white lettering |
1 | 25W4-GT | $2.00 | GE | 110% | --- | NOS (OB) | white lettering |
1 | 25W4-GT | $2.00 | GE | 110% | --- | NOS (OB) | white lettering |
1 | 25W4-GT | $2.00 | GE | 115% | --- | NOS (OB) | white lettering |
1 | 25W4-GT | $2.00 | GE | 115% | --- | NOS (OB) | white lettering |
1 | 25W4-GT | $2.00 | GE | 115% | --- | NOS (OB) | white lettering |
1 | 25W4-GT | $2.00 | GE | 120% | --- | NOS (OB) | white lettering - torn box flap |
1 | 25W4-GT | $2.00 | GE | 115% | --- | NOS (OB) | red lettering |
1 | 25W4-GT | $2.00 | RCA | 110% | --- | NOS (OB) | silver lettering |
1 | 25W4-GT | $2.00 | RCA | 110% | --- | NOS (OB) | silver lettering |
1 | 25W4-GT | $2.00 | RCA | 110% | --- | NOS (OB) | silver lettering |
1 | 25W4-GT | $2.00 | RCA | 110% | --- | NOS (OB) | silver lettering |
1 | 25W4-GT | $2.00 | RCA | 115% | --- | NOS (OB) | silver lettering |
1 | 25W4-GT | $2.00 | RCA | 110% | --- | NOS (OB) | silver lettering - torn box flap |
1 | 25W4-GT | $2.00 | RCA | 115% | --- | NOS (OB) | silver lettering - torn box flap |
1 | 25W4-GT | $2.00 | RCA | 110% | --- | NOS (OB) | silver lettering - damaged box |
1 | 25W4-GT | $2.00 | RCA | 110% | --- | NOS (OB) | silver lettering - damaged box |
1 | 25W4-GT | $2.00 | RCA | 110% | --- | NOS (OB) | red lettering |
1 | 25W4-GT | $2.00 | RCA | 110% | --- | NOS (OB) | red lettering |
1 | 25W4-GT | $2.00 | RCA | 110% | --- | NOS (OB) | red lettering - missing box flap |
1 | 25W4-GT | $2.00 | RCA | 115% | --- | NOS (OB) | red lettering |
1 | 25W4-GT | $2.00 | RCA | 115% | --- | NOS (OB) | red lettering |
1 | 25W4-GT | $2.00 | Sylvania | 110% | --- | NOS (OB) | yellow lettering |
1 | 25W4-GT | $2.00 | Sylvania | 110% | --- | NOS (OB) | yellow lettering |
1 | 25W4-GT | $2.00 | Sylvania | 110% | --- | NOS (OB) | yellow lettering |
1 | 25W4-GT | $2.00 | Sylvania | 110% | --- | NOS (OB) | yellow lettering |
1 | 25W4-GT | $2.00 | Sylvania | 110% | --- | NOS (OB) | yellow lettering |
1 | 25W4-GT | $2.00 | Sylvania | 110% | --- | NOS (OB) | yellow lettering |
1 | 25W4-GT | $2.00 | Sylvania | 110% | --- | NOS (OB) | yellow lettering |
1 | 25W4-GT | $2.00 | Sylvania | 120% | --- | NOS (OB) | yellow lettering |
1 | 25W4-GT | $2.00 | Philco | 110% | --- | NOS (OB) | --- |
1 | 25W4-GT | $2.00 | Philco | 110% | --- | NOS (OB) | --- |
1 | 25W4-GT | $2.00 | Philco | 115% | --- | NOS (OB) | --- |
1 | 25W4-GT | $2.00 | Philco | 120% | --- | NOS (OB) | torn box flap |
1 | 25W4-GT | $2.00 | CBS | 110% | --- | NOS (OB) | --- |
1 | 25W4-GT | $2.00 | CBS | 115% | --- | NOS (OB) | --- |
1 | 25W4-GT | $2.00 | Tung-Sol | 115% | --- | NOS (OB) | --- |
1 | 25W4-GT | $2.00 | GM / Delco | 115% | --- | NOS (OB) | --- |
1 | 25W4-GT | $2.00 | Selectron | 115% | --- | NOS (OB) | --- |
1 | 25W4-GT | $2.00 | Raytheon | 110% | --- | NOS (OB) | --- |
1 | 25W4-GT | $2.00 | Raytheon | 110% | --- | NOS (OB) | --- |
1 | 25W4-GT | $2.00 | Raytheon | 110% | --- | NOS (OB) | --- |
1 | 25W4-GT | $2.00 | Raytheon | 115% | --- | NOS (OB) | --- |
1 | 25W4-GT | $2.00 | Raytheon | 115% | --- | NOS (OB) | --- |
1 | 25W4-GT | $2.00 | Raytheon | 115% | --- | NOS (OB) | --- |
1 | 25W4-GT | $2.00 | Raytheon | 120% | --- | NOS (OB) | --- |
1 | 25W4-GT | $2.00 | Raytheon | 120% | --- | NOS (OB) | --- |
1 | 25W4-GT | $2.00 | Raytheon | 110% | --- | NOS (OB) | missing box flap |
1 | 25W4-GT | $2.00 | Westinghouse | 110% | --- | NOS (OB) | --- |
1 | 25W4-GT | $2.00 | Westinghouse | 110% | --- | NOS (OB) | torn box flap |
1 | 25W4-GT | $2.00 | National Union | 120% | --- | NOS (OB) | --- |
1 | 25W4-GT | $2.00 | National Union | 115% | --- | NOS (OB) | worn box |
1 | 25W4-GT | $2.00 | National Union | 115% | --- | NOS (OB) | damaged box |
1 | 25W4-GT | $1.00 | GE | 115% | --- | used (rb) | white lettering |
1 | 25W4-GT | $1.00 | GE | 110% | --- | used (rb) | white lettering |
1 | 25W4-GT | $1.00 | RCA | 110% | --- | used (rb) | silver lettering |
1 | 25W4-GT | $1.00 | RCA | 110% | --- | used (rb) | silver lettering |
1 | 25W4-GT | $1.00 | Silvertone | 110% | --- | used (rb) | --- |
1 | 25W4-GT | $1.00 | Teleking | 115% | --- | 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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Discount Bargain Packs
and
Bargain Bin
for more savings!
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