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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 5AW4 $6.00 RCA 110% / 110% --- NOS (ob) --- rectangular plates
1 5AW4 $6.00 RCA 110% / 110% --- NOS (ob) --- rectangular plates
1 5AW4 $6.00 RCA 110% / 110% --- NOS (ob) --- rectangular plates
1 5AW4 $6.00 CBS 110% / 110% --- NOS (ob) --- V plates
1 5AW4 $6.00 CBS / Hytron 110% / 110% --- NOS (wb) --- V plates
1 5AW4 $4.00 CBS 110% / 110% --- used (L) --- rectangular plates
1 5AW4 $4.00 CBS / Hytron 110% / 110% --- used (rb) V plates
1 5AU4 $6.00 GE 110% / 110% --- NOS (ob) missing box flap
1 5AU4 $6.00 GE 110% / 110% --- NOS (ob) damaged box
1 5AU4 $6.00 GE 110% / 110% --- NOS (ob) damaged box
1 5AU4 $6.00 Packard Bell 110% / 110% --- NOS (ob) ---
1 5AU4 $4.00 GE 110% / 110% --- used (L) ---
1 5AU4 $4.00 Raytheon 105% / 105% --- used (L) cat:403-256
1 5AU4 $3.00 Raytheon 90% / 90% --- used (L) ---
1 5V3 $5.00 Admiral 110% / 110% --- NOS (ob) ---
1 5V3 $5.00 Admiral 110% / 110% --- NOS (ob) ---
1 5V3 $6.00 GE 110% / 110% --- NOS (ob) missing box flap
1 5V3 $6.00 GE 110% / 110% --- NOS (ob) ---
1 5V3 $6.00 GE 110% / 110% --- NOS (ob) ---
1 5V3 $6.00 GE 110% / 110% --- NOS (ob) ---
1 5V3 $6.00 GE 110% / 110% --- NOS (ob) ---
1 5V3 $6.00 RCA 110% / 110% --- NOS (ob) ---
1 5V3 $6.00 RCA 110% / 110% --- NOS (ob) ---
1 5V3 $6.00 RCA 110% / 110% --- NOS (ob) damaged box
1 5V3 $6.00 Zenith 110% / 110% --- NOS (ob) ---
1 5V3 $6.00 Zenith 110% / 110% --- NOS (ob) ---
1 5V3 $6.00 Zenith 110% / 110% --- NOS (ob) ---
1 5V3 $6.00 Zenith 110% / 110% --- NOS (ob) ---
1 5V3 $6.00 Zenith 110% / 110% --- NOS (ob) ---
1 5V3 $6.00 Zenith 110% / 110% --- NOS (ob) missing box flap
1 5V3 $6.00 Westinghouse 110% / 110% --- NOS (ob) ---
1 5V3 $6.00 Tung-Sol 110% / 110% --- NOS (ob) ---
1 5V3 $6.00 Dumont 110% / 110% --- NOS (ob) ---
1 5V3 $3.50 RCA 105% / 105% --- used (rb) ---
1 5V3 $4.00 Sylvania 110% / 110% --- used (rb) damaged box
1 5V3 $4.00 GE 110% / 110% --- used (ob) cat:403-305
1 5V3 $3.00 Rogers 90% / 95% --- used (L) ---
1 5V3 / 5AU4 $6.00 GE 110% / 110% --- NOS (ob) ---
1 5V3 / 5AU4 $6.00 GE 110% / 110% --- NOS (ob) ---
1 5V3 / 5AU4 $6.00 GE 110% / 110% --- NOS (ob) ---
1 5V3 / 5AU4 $6.00 GE 110% / 110% --- NOS (ob) ---
1 5X4-G $4.00 Raytheon 95% / 100% --- used (L) ---
1 5X4-G $4.00 RCA 95% / 95% --- used (L) ---
1 5X4-G $4.00 RCA 90% / 90% --- used (L) ---
1 5X4-G $4.00 RCA 90% / 95% --- used (L) ---
1 5X4-G $4.00 RCA 90% / 85% --- used (L) ---

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