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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
43 6AT6 $2.50 OEM unlabeled untested --- NOS (L) - loose OEM packed - unlabeled NOS tubes
1 6AT6 $5.00 RCA 120% diodes 110% / 110% 1500 / 1200Gm NOS (OB) red lettering
1 6AT6 $5.00 RCA 120% diodes 110% / 110% 1500 / 1200Gm NOS (OB) red lettering
98 6EB8 / 6GN8 $3.00 OEM unlabled untested --- NOS (L) (M9) top halo getter - loose OEM packed - unlabeled NOS tubes - South Korea
100 6KT8 $2.50 OEM unlabeled untested --- NOS (L) - loose OEM packed - unlabeled NOS tubes
88 5965 $4.00 GE untested unlabeled NOS (L) (M9) rectangular gray plates - top halo getter - loose OEM packed - unlabeled NOS tubes
1 5965 $5.00 RCA 110% / 120% 4100 / 4400 / 4100Gm used (wb) (M9) oval gray plates - top getter - red lettering - tripple mica
1 5965 $1.50 unknown 100% / 90% 3500 / 3000 / 4100Gm used (rb) (M9) oval black plates - top getter - tripple mica
1 5965A $5.00 RCA 130% / 110% 4800 / 4500 / 4100Gm NOS (OB) (M9) rectangular gray plates - dual side getters - red lettering - made by GE
1 5965 $5.00 GE 130% / 110% 4300 / 4100 / 4100Gm NOS (OB) (M9) rectangular gray plates - top getter - 5 star - red lettering
1 5965 $5.00 GE 120% / 110% 4400 / 4200 / 4100Gm NOS (OB) (M9) rectangular gray plates - top getter - white lettering
1 5965 $5.00 GE 110% / 110% 4100 / 4200 / 4100Gm NOS (OB) (M9) rectangular gray plates - top getter - white lettering
1 5965 $5.00 GE 120% / 120% 4700 / 4500 / 4100Gm NOS (OB) (M9) rectangular gray plates - top getter - white lettering
1 5965 $5.00 GE 110% / 110% 4100 / 4100 / 4100Gm NOS (OB) (M9) rectangular gray plates - top getter - white lettering
1 5965 $5.00 GE 110% / 130% 4100 / 4500 / 4100Gm NOS (OB) (M9) rectangular gray plates - top getter - white lettering
1 5965 $5.00 GE 110% / 110% 4100 / 4100 / 4100Gm NOS (OB) (M9) rectangular gray plates - top getter - white lettering
1 5965 $5.00 GE 120% / 130% 4400 / 4700 / 4100Gm NOS (OB) (M9) rectangular gray plates - top getter - white lettering
1 5965 $5.00 Sylvania 110% / 110% 4100 / 4100 / 4100Gm NOS (OB) (M9) oval gray plates - top getter - green lettering
1 5965 $5.00 RCA 130% / 120% 4400 / 4200 / 4100Gm NOS (wb) (M9) oval gray plates - top getter - red lettering
1 5965 $5.00 RCA 120% / 120% 4100 / 4100 / 4100Gm NOS (OB) (M9) oval gray plates - top getter - red lettering
1 5965 $5.00 RCA 115% / 115% 4100 / 4200 / 4100Gm NOS (OB) (M9) oval gray plates - top getter - red lettering
1 5965 $5.00 National 130% / 140% 5000 / 5200 / 4100Gm NOS (OB) (M9) oval black plates - top getter
1 5965 $5.00 National 120% / 120% 4200 / 4200 / 4100Gm NOS (OB) (M9) oval gray plates - top getter
1 GL-5965A $2.50 GE 120% / 120% 4600 / 4700 / 4100Gm used (rb) (M9) rectangular black plates - top getter - white lettering
1 5965A $2.50 GE 120% / 100% 4600 / 4000 / 4100Gm used (rb) (M9) rectangular gray plates - dual side getters - red lettering
1 5965A $2.50 GE 120% / 140% 4700 / 4800 / 4100Gm used (rb) (M9) rectangular gray plates - dual side getters - red lettering
1 5965A $2.50 GE 100% / 110% 4000 / 4200 / 4100Gm used (rb) (M9) rectangular gray plates - dual side getters - red lettering - 5 star
1 5965A $2.50 GE 120% / 110% 4100 / 4100 / 4100Gm used (rb) (M9) rectangular gray plates - dual side getters - red lettering
1 5965 $2.50 GE 110% / 110% 4100 / 3900 / 4100Gm used (rb) (M9) rectangular gray plates - top getter
1 5965 $2.50 GE 120% / 100% 3900 / 3500 / 4100Gm used (rb) (M9) rectangular gray plates - top getter
1 5965 $2.50 GE 110% / 120% 4100 / 4200 / 4100Gm used (rb) (M9) rectangular gray plates - top getter - white lettering
1 5965 $2.50 GE 100% / 100% 3700 / 3900 / 4100Gm used (rb) (M9) rectangular black plates - top getter - white lettering
1 5965 $2.50 GE 130% / 110% 5400 / 4500 / 4100Gm used (rb) (M9) rectangular gray plates - top getter - white lettering
1 5965 $2.50 GE 120% / 120% 4100 / 4400 / 4100Gm used (rb) (M9) rectangular gray plates - top getter - white lettering
1 5965 $2.50 GE 120% / 140% 4200 / 4200 / 4100Gm used (rb) (M9) rectangular gray plates - top getter - white lettering
1 5965 $2.50 GE 120% / 100% 4000 / 3600 / 4100Gm used (rb) (M9) rectangular gray plates - top getter - white lettering
1 5965 $2.50 Sylvania 120% / 130% 4700 / 4600 / 4100Gm used (rb) (M9) oval gray plates - top getter - green lettering
1 5965 $2.50 Sylvania 110% / 120% 3800 / 3800 / 4100Gm used (rb) (M9) oval black plates - top getter - green lettering
1 5965 $2.50 Sylvania 120% / 110% 4500 / 4200 / 4100Gm used (rb) (M9) oval gray plates - top getter - yellow lettering
1 5965 $2.50 Beckman 120% / 110% 4900 / 4200 / 4100Gm used (rb) (M9) rectangular gray plates - dual side getters
1 5965 $2.50 RCA 110% / 110% 3900 / 3800 / 4100Gm used (wb) (M9) oval gray plates - top getter - red lettering
1 5965 $2.50 RCA 110% / 130% 3800 / 4700 / 4100Gm used (wb) (M9) oval gray plates - top getter - red lettering
1 5965 $2.50 RCA 110% / 120% 4100 / 4200 / 4100Gm used (wb) (M9) oval gray plates - top getter - red lettering
1 5965 $2.50 RCA 110% / 110% 3900 / 3900 / 4100Gm used (rb) (M9) oval gray plates - top getter - white lettering
1 5965 $2.50 IBM 110% / 120% 4200 / 4300 / 4100Gm used (rb) (M9) rectangular gray plates - top getter
1 5965 $2.50 IBM 110% / 100% 5000 / 4200 / 4100Gm used (rb) (M9) rectangular gray plates - top getter
1 5965A $2.50 Hewlett Packard 110% / 130% 4300 / 4800 / 4100Gm used (rb) (M9) rectangular gray plates - dual side getters
1 5965A $2.50 Hewlett Packard 110% / 110% 4100 / 4200 / 4100Gm used (rb) (M9) rectangular gray plates - dual side getters
1 5965 $2.50 unknown 120% / 120% 4400 / 4200 / 4100Gm used (rb) (M9) oval black plates - top getter
1 5965 $2.50 unknown 120% / 120% 4700 / 4800 / 4100Gm used (rb) (M9) oval gray plates - top getter
1 5965 $2.50 unknown 100% / 110% 3800 / 4000 / 4100Gm used (rb) (M9) oval black plates - top getter
1 5965 $1.00 Sylvania 100% / 90% 3500 / 3300 / 4100Gm used (rb) (M9) oval black plates - top getter - green lettering
1 5965 $0.50 GE 140% / 80% 5200 / 3400 / 4100Gm used (rb) (M9) rectangular gray plates - top getter
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