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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 6BD5-GT $3.00 Sylvania 100% 4600 / 5000Gm used (ob) green lettering
1 6EX6 $5.00 GE 110% 4700 / 4000Gm NOS (OB) ---
1 6EX6 $5.00 GE 110% 4200 / 4000Gm NOS (OB) ---
1 6EX6 $5.00 GE 110% 4400 / 4000Gm NOS (OB) ---
1 6EX6 $5.00 GE 110% 4200 / 4000Gm NOS (OB) ---
1 6EX6 $5.00 GE 110% 4400 / 4000Gm NOS (OB) ---
1 6EX6 $5.00 GE 110% 4400 / 4000Gm NOS (OB) ---
1 6EX6 $5.00 RCA 110% 4500 / 4000Gm NOS (OB) damaged box
1 6EX6 $5.00 RCA 110% 4500 / 4000Gm NOS (OB) ---
1 6EX6 $5.00 RCA 110% 4200 / 4000Gm NOS (OB) ---
1 6EX6 $5.00 Raytheon 110% 4800 / 4000Gm NOS (OB) ---
1 6EX6 $5.00 Tung-Sol 110% 4500 / 4000Gm NOS (OB) ---
1 6EX6 $5.00 Tung-Sol 110% 4400 / 4000Gm NOS (OB) ---
1 6EX6 $5.00 Tung-Sol 110% 4400 / 4000Gm NOS (OB) ---
1 6EX6 $2.50 GE 100% 4000 / 4000Gm used (OB) ---
1 6FW5 $2.00 GE 100% 90dmc used (ob) white lettering
1 6FW5 $2.00 GE 90% 90dmc used (ob) white lettering
1 6FW5 $2.00 GE 100% 110dmc used (L) white lettering
1 6FW5 $2.00 RCA 90% 100dmc used (L) red lettering
1 12EN6 $3.00 Sylvania 110% 8500 / 8000Gm NOS (OB) yellow lettering
1 12EN6 $3.00 RCA 110% 11000 / 8000Gm NOS (OB) silver lettering
1 12EN6 $3.00 RCA 120% 11000 / 8000Gm NOS (OB) red lettering
1 12EN6 $3.00 RCA 110% 9000 / 8000Gm NOS (OB) red lettering
1 12EN6 $3.00 CBS 110% 8500 / 8000Gm NOS (OB) ---
1 12EN6 $3.00 GE 110% 9000 / 8000Gm NOS (OB) white lettering
1 12EN6 $1.50 Wards Super Airline 110% 8000 / 8000Gm used (rb) ---
1 50FE5 $1.50 RCA 95% 3500 / 4000Gm used (OB) grid 'C' clip
1 1626 / VT-137 $10.00 RCA 120% 2300 / 2100Gm NOS (OB) US Army - brown base - grid clip
1 1626 / VT-137 $10.00 RCA 110% 2150 / 2100Gm NOS (OB) US Army - brown base - grid clip
1 1626 $10.00 RCA 120% 2350 / 2100Gm NOS (OB) JAN - brown base - grid clip - damaged box
1 1626 $10.00 RCA 110% 2200 / 2100Gm NOS (OB) JAN - brown base - grid clip
1 1626 $10.00 RCA 130% 2350 / 2100Gm NOS (OB) brown base - grid clip
1 1626 / VT-137 $10.00 Hytron 120% 2350 / 2100Gm NOS (wb) JAN - brown base - grid 'c' clip
1 1626 / VT-137 $10.00 Hytron 120% 2200 / 2100Gm NOS (OB) JAN - brown base - grid 'c' clip
1 1626 / VT-137 $10.00 Hytron 120% 2200 / 2100Gm NOS (OB) JAN - brown base - grid 'c' clip
1 1626 $10.00 National Union 120% 2300 / 2100Gm NOS (OB) US Navy - brown base - grid clip - damaged box
1 1626 / VT-137 $10.00 Sylvania 120% 2150 / 2100Gm NOS (OB) JAN - brown base - grid clip
1 1626 / VT-137 $6.00 Hytron 110% 2150 / 2100Gm used (rb) JAN - brown base - grid clip
1 1626 / VT-137 $6.00 RCA 125% 2200 / 2100Gm used (rb) US Army - brown base - grid clip
1 1626 / VT-137 $6.00 RCA 120% 2300 / 2100Gm used (rb) US Army - brown base - grid clip
1 1626 $6.00 RCA 120% 2250 / 2100Gm used (rb) US Navy - brown base - grid clip
1 1626 / VT-137 $6.00 RCA 120% 2450 / 2100Gm used (L) (cat:401-204) - black plate - brown base - bottom getter - US Army - grid clip
1 1626 / VT-137 $6.00 RCA 120% 2400 / 2100Gm used (L) (cat:604-9) - black plate - brown base - bottom getter - US Navy - grid clip
1 1626 / VT-137 $6.00 RCA 115% 2400 / 2100Gm used (L) US Navy - brown base - grid clip
1 1626 / VT-137 $6.00 RCA 115% 2400 / 2100Gm used (L) US Army - brown base - grid clip
1 1626 / VT-137 $6.00 RCA 120% 2300 / 2100Gm used (L) US Army - brown base - grid clip
1 1626 / VT-137 $6.00 RCA 115% 2250 / 2100Gm used (L) US Army - brown base - grid clip
1 1626 / VT-137 $6.00 RCA 115% 2200 / 2100Gm used (L) JAN - brown base - grid clip
1 1626 / VT-137 $6.00 RCA 115% 2200 / 2100Gm used (L) US Army - brown base - grid clip
1 1626 / VT-137 $6.00 RCA 115% 2250 / 2100Gm used (L) JAN - brown base - grid clip
1 1626 $6.00 RCA 110% 2150 / 2100Gm used (L) US Navy - brown base - grid clip
1 1626 $6.00 RCA 110% 2150 / 2100Gm used (L) US Navy - brown base - grid clip
1 1626 $6.00 RCA 115% 2200 / 2100Gm used (L) US Navy - brown base - grid clip
1 1626 $6.00 RCA 120% 2400 / 2100Gm used (L) US Navy - brown base - grid clip
1 1626 $6.00 RCA 120% 2300 / 2100Gm used (L) US Navy - brown base - grid clip
1 1626 $6.00 RCA 120% 2300 / 2100Gm used (L) brown base - grid clip
1 1626 $6.00 RCA 120% 2400 / 2100Gm used (L) US Navy - brown base - grid clip
1 1626 $6.00 RCA 120% 2400 / 2100Gm used (L) US Navy - brown base - grid clip
1 1626 $6.00 RCA 120% 2350 / 2100Gm used (L) US Navy - brown base - grid clip
1 1626 $6.00 RCA 115% 2400 / 2100Gm used (L) US Navy - brown base - grid clip
1 1626 $6.00 RCA 115% 2250 / 2100Gm used (L) US Navy - brown base - grid clip
1 1626 $6.00 RCA 110% 2250 / 2100Gm used (L) US Navy - brown base - grid clip
1 1626 / VT-137 $6.00 Hytron 110% 2100 / 2100Gm used (L) JAN - brown base - grid 'c' clip
1 1626 / VT-137 $6.00 Sylvania 115% 2150 / 2100Gm used (L) JAN - brown base - grid 'c' clip
1 1626 / VT-137 $5.00 RCA 120% 2300 / 2100Gm used (L) brown base - grid clip - loose base
1 1626 / VT-137 $5.00 RCA 125% 2450 / 2100Gm used (L) brown base - grid clip - loose base
1 1626 $5.00 RCA 105% 1900 / 2100Gm used (L) US Navy - brown base - grid clip
1 1626 / VT-137 $5.00 National Union 105% 1900 / 2100Gm used (L) JAN - brown base - grid clip
1 1626 / VT-137 $3.00 Tung-Sol 90% 1700 / 2100Gm used (L) brown base - grid clip
1 1626 / VT-137 $3.00 Ken-Rad 90% 1750 / 2100Gm used (L) brown base - grid clip
1 1642 $12.00 RCA 120% / 115% 1500: 1550 / 1375Gm NOS (OB) ceramic base - US Navy (CK38233) - damaged box
1 1642 $10.00 RCA 115% / 120% 1550: 1650 / 1375Gm NOS (OB) brown base - US Navy (CK38233)
1 1642 $10.00 Ken-Rad / Western Electric 110 / 110% 1400: 1500 / 1375Gm NOS (OB) brown base - US Navy (CK38233) - damaged box
1 1642 $10.00 Ken-Rad / Western Electric 110 / 110% 1500: 1500 / 1375Gm NOS (OB) brown base - US Navy (CK38233) - damaged box
1 1642 $10.00 US Navy 110% / 110% 1400: 1450 / 1375Gm NOS (wb) brown base - US Navy (CK38233)
1 1642 $6.00 US Navy 110% / 110% 1500: 1000 / 1375Gm used (rb) ceramic base - US Navy (CK38233)
1 1642 $5.00 RCA 100% / 105% 1400: 1550 / 1375Gm used (L) brown base - US Navy (CK38233)

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