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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 6AU4-GTA $2.00 Amperex 120% --- NOS (OB) world logo
1 6AU4-GTA $2.00 Amperex 115% --- NOS (OB) world logo
1 6AU4-GTA $2.00 Amperex 115% --- NOS (OB) world logo
1 6AU4-GTA $2.00 Amperex 115% --- NOS (OB) world logo
1 6AU4-GTA $2.00 Amperex 115% --- NOS (OB) world logo
1 6AU4-GTA $2.00 Amperex 115% --- NOS (OB) world logo
1 6AU4-GTA $2.00 Amperex 110% --- NOS (OB) world logo
1 6AU4-GTA $2.00 Amperex 110% --- NOS (OB) world logo
1 6AU4-GTA $2.00 Amperex 110% --- NOS (OB) world logo
1 6AU4-GTA $2.00 Amperex 110% --- NOS (OB) world logo
1 6AU4-GTA $2.00 Amperex 120% --- NOS (OB) world logo - button base
1 6AU4-GTA $2.00 Amperex 115% --- NOS (OB) world logo - button base - damaged box
1 6AU4-GTA $2.00 Amperex 115% --- NOS (OB) world logo - button base - damaged box
1 6AU4-GTA $2.00 RCA 120% --- NOS (OB) red lettering
1 6AU4-GTA $2.00 RCA 120% --- NOS (OB) red lettering
1 6AU4-GTA $2.00 RCA 120% --- NOS (OB) red lettering
1 6AU4-GTA $2.00 RCA 120% --- NOS (OB) red lettering
1 6AU4-GTA $2.00 RCA 115% --- NOS (OB) red lettering
1 6AU4-GTA $2.00 RCA 115% --- NOS (OB) red lettering
1 6AU4-GTA $2.00 RCA 115% --- NOS (OB) red lettering
1 6AU4-GTA $2.00 RCA 115% --- NOS (OB) red lettering
1 6AU4-GTA $2.00 RCA 115% --- NOS (OB) red lettering
1 6AU4-GTA $2.00 RCA 115% --- NOS (OB) red lettering
1 6AU4-GTA $2.00 RCA 115% --- NOS (OB) red lettering - worn box
1 6AU4-GTA $2.00 RCA 115% --- NOS (OB) red lettering - damaged box
1 6AU4-GTA $2.00 RCA 110% --- NOS (OB) red lettering - damaged box
1 6AU4-GTA $2.00 RCA 115% --- NOS (OB) red lettering - button base
1 6AU4-GTA $2.00 RCA 115% --- NOS (OB) red lettering - button base
1 6AU4-GTA $2.00 RCA 115% --- NOS (OB) red lettering - button base
1 6AU4-GTA $2.00 RCA 115% --- NOS (OB) red lettering - button base
1 6AU4-GTA $2.00 RCA 115% --- NOS (OB) red lettering - button base
1 6AU4-GTA $2.00 RCA 115% --- NOS (OB) red lettering - button base
1 6AU4-GTA $2.00 RCA 115% --- NOS (OB) red lettering - button base
1 6AU4-GTA $2.00 RCA 115% --- NOS (OB) red lettering - button base
1 6AU4-GTA $2.00 RCA 115% --- NOS (OB) red lettering - button base
1 6AU4-GTA $2.00 RCA 115% --- NOS (OB) red lettering - button base - water damaged box
1 6AU4-GTA $2.00 RCA 115% --- NOS (OB) red lettering - button base - water damaged box
1 6AU4-GTA $2.00 RCA 115% --- NOS (OB) red lettering - button base - damaged box
1 6AU4-GTA $2.00 RCA 120% --- NOS (OB) red lettering - button base
1 6AU4-GTA $2.00 RCA 110% --- NOS (OB) red lettering - button base
1 6AU4-GTA $2.00 RCA 110% --- NOS (OB) red lettering - button base - missing box flap
1 6AU4-GTA $2.00 RCA 115% --- NOS (OB) silver lettering
1 6AU4-GTA $2.00 RCA 115% --- NOS (OB) silver lettering
1 6AU4-GTA $2.00 RCA 115% --- NOS (OB) silver lettering
1 6AU4-GTA $2.00 RCA 110% --- NOS (OB) silver lettering
1 6AU4-GTA $2.00 GE 115% --- NOS (OB) white lettering
1 6AU4-GTA $2.00 GE 115% --- NOS (OB) white lettering
1 6AU4-GTA $2.00 GE 115% --- NOS (OB) white lettering
1 6AU4-GTA $2.00 GE 115% --- NOS (OB) white lettering
1 6AU4-GTA $2.00 GE 115% --- NOS (OB) white lettering
1 6AU4-GTA $2.00 GE 115% --- NOS (OB) white lettering
1 6AU4-GTA $2.00 GE 115% --- NOS (OB) white lettering
1 6AU4-GTA $2.00 GE 115% --- NOS (OB) white lettering
1 6AU4-GTA $2.00 GE 115% --- NOS (OB) white lettering - worn box
1 6AU4-GTA $2.00 GE 120% --- NOS (OB) white lettering
1 6AU4-GTA $2.00 GE 120% --- NOS (OB) white lettering - water damaged box
1 6AU4-GTA $2.00 GE 110% --- NOS (OB) white lettering
1 6AU4-GTA $2.00 GE 115% --- NOS (OB) white lettering - button base
1 6AU4-GTA $2.00 GE 115% --- NOS (OB) white lettering - button base - worn box
1 6AU4-GTA $2.00 GE 115% --- NOS (OB) red lettering
1 6AU4-GTA $2.00 GE 115% --- NOS (OB) red lettering - water damaged box
1 6AU4-GTA $2.00 Sylvania 115% --- NOS (OB) yellow lettering
1 6AU4-GTA $2.00 Sylvania 115% --- NOS (OB) yellow lettering
1 6AU4-GTA $2.00 Sylvania 115% --- NOS (OB) yellow lettering
1 6AU4-GTA $2.00 Sylvania 120% --- NOS (OB) yellow lettering - worn box
1 6AU4-GTA $2.00 Sylvania 120% --- NOS (OB) yellow lettering - worn box
1 6AU4-GTA $2.00 Sylvania 120% --- NOS (OB) yellow lettering
1 6AU4-GTA $2.00 Sylvania 110% --- NOS (OB) yellow lettering
1 6AU4-GTA $2.00 Sylvania 110% --- NOS (OB) yellow lettering
1 6AU4-GTA $2.00 Sylvania 115% --- NOS (OB) yellow lettering - button base
1 6AU4-GTA $2.00 Sylvania 110% --- NOS (OB) yellow lettering - button base
1 6AU4-GTA $2.00 Sylvania 115% --- NOS (OB) yellow lettering - button base - worn box
1 6AU4-GTA $2.00 Sylvania 110% --- NOS (OB) red lettering
1 6AU4-GTA $2.00 Sylvania 115% --- NOS (OB) red lettering
1 6AU4-GTA $2.00 Sylvania 115% --- NOS (OB) red lettering
1 6AU4-GTA $2.00 Raytheon 115% --- NOS (OB) ---
1 6AU4-GTA $2.00 Raytheon 115% --- NOS (OB) ---
1 6AU4-GTA $2.00 Raytheon 115% --- NOS (OB) ---
1 6AU4-GTA $2.00 Raytheon 115% --- NOS (OB) ---
1 6AU4-GTA $2.00 Raytheon 115% --- NOS (OB) ---
1 6AU4-GTA $2.00 Raytheon 115% --- NOS (OB) ---
1 6AU4-GTA $2.00 Raytheon 115% --- NOS (OB) ---
1 6AU4-GTA $2.00 Raytheon 115% --- NOS (OB) ---
1 6AU4-GTA $2.00 Raytheon 115% --- NOS (OB) ---
1 6AU4-GTA $2.00 Raytheon 115% --- NOS (OB) ---
1 6AU4-GTA $2.00 Raytheon 115% --- NOS (OB) ---
1 6AU4-GTA $2.00 Raytheon 115% --- NOS (OB) worn box
1 6AU4-GTA $2.00 Raytheon 120% --- NOS (OB) ---
1 6AU4-GTA $2.00 Raytheon 120% --- NOS (OB) ---
1 6AU4-GTA $2.00 Raytheon 120% --- NOS (OB) ---
1 6AU4-GTA $2.00 Raytheon 120% --- NOS (OB) ---
1 6AU4-GTA $2.00 Raytheon 120% --- NOS (OB) ---
1 6AU4-GTA $2.00 Raytheon 120% --- NOS (OB) ---
1 6AU4-GTA $2.00 Raytheon 120% --- NOS (OB) ---
1 6AU4-GTA $2.00 Raytheon 120% --- NOS (OB) ---
1 6AU4-GTA $2.00 Raytheon 120% --- NOS (OB) ---
1 6AU4-GTA $2.00 Raytheon 120% --- NOS (OB) ---
1 6AU4-GTA $2.00 Raytheon 120% --- NOS (OB) ---
1 6AU4-GTA $2.00 Raytheon 120% --- NOS (OB) worn box
1 6AU4-GTA $2.00 Raytheon 120% --- NOS (OB) worn box
1 6AU4-GTA $2.00 Raytheon 120% --- NOS (OB) water damaged box
1 6AU4-GT $2.00 Raytheon 115% --- NOS (OB) ---
1 6AU4-GTA $2.00 Triad 120% --- NOS (OB) ---
1 6AU4-GTA $2.00 Truetone 115% --- NOS (OB) ---
1 6AU4-GT $2.00 Philco 115% --- NOS (OB) ---
1 6AU4-GTA $2.00 Magnavox 115% --- NOS (OB) ---
1 6AU4-GTA $2.00 Magnavox 115% --- NOS (OB) ---
1 6AU4-GTA $2.00 Zenith 120% --- NOS (OB) ---
1 6AU4-GTA $2.00 Zenith 115% --- NOS (OB) ---
1 6AU4-GTA $2.00 Zenith 120% --- NOS (OB) button base
1 6AU4-GTA $2.00 Zenith 115% --- NOS (OB) button base
1 6AU4 $2.00 Arcturus 110% --- NOS (OB) ---
1 6AU4 $2.00 Arcturus 110% --- NOS (OB) ---
1 6AU4-GTA $1.00 Raytheon 120% --- used (rb) ---
1 6AU4-GTA $1.00 GE 115% --- used (rb) white lettering
1 6AU4-GTA $1.00 GE 115% --- used (rb) white lettering
1 6AU4-GTA $1.00 Delta 115% --- used (rb) ---
1 6AU4-GTA $1.00 Delta 115% --- used (rb) ---
1 6AU4-GTA $1.00 Delta 115% --- used (rb) ---
1 6AU4-GTA $1.00 Delta 110% --- used (rb) ---
1 6AU4-GTA $1.00 Cornell 115% --- used (rb) ---
1 6AU4-GTA $1.00 Cornell 115% --- used (rb) ---
1 6AU4-GTA $1.00 Cornell 110% --- used (rb) ---
1 6AU4-GT $1.00 RCA 120% --- used (rb) silver lettering
1 6AU4-GTA $1.00 unknown 115% --- used (rb) ---
1 12AU4-GTA $1.00 Munta TV 110% --- used (rb) ---
1 6U4-GT $2.00 Wetinghouse 120% --- NOS (OB) damaged box
1 6U4-GT $1.00 Hytron 110% --- 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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Don't forget to visit our
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MDB Ventures Home

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