MDB Ventures Audio Tubes

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Type: 6BD5 , 6EX6 , 6FW5 , 12EN6 , 50FE5 , 1626 , VT-137


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
Quantity
Available
Tube
Type
Price
Each
Tube
Brand
Emission
Strength
Mutual
Conductance

Description

Notes
1 6BD5-GT $3.00 Sylvania 110% 5800/5000Gm NOS (OB) yellow lettering
1 6BD5-GT $3.00 Sylvania 110% 5800/5000Gm NOS (OB) yellow lettering
1 6BD5-GT $3.00 Sylvania 110% 5800/5000Gm NOS (OB) green lettering
1 6BD5-GT $3.00 Sylvania 110% 5800/5000Gm NOS (OB) green lettering
1 6BD5-GT $3.00 Sylvania 110% 6000/5000Gm NOS (OB) green lettering
1 6BD5-GT $3.00 Sylvania 110% 6000/5000Gm NOS (OB) green lettering
1 6BD5-GT $3.00 Raytheon 110% 5800/5000Gm NOS (OB) ---
1 6BD5-GT $3.00 GM/Delco 110% 5800/5000Gm NOS (OB) ---
1 6BD5-GT $1.50 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 120% 4400/4000Gm NOS (OB) ---
1 6EX6 $5.00 RCA 110% 4200/4000Gm NOS (OB) ---
1 6EX6 $5.00 RCA 140% 4400/4000Gm 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 $4.00 Sylvania 110% 100dmc NOS (OB) yellow lettering
1 6FW5 $4.00 RCA 110% 100dmc NOS (OB) red lettering
1 6FW5 $4.00 RCA 110% 100dmc NOS (OB) red lettering
1 6FW5 $4.00 RCA 110% 100dmc NOS (OB) red lettering
1 6FW5 $4.00 RCA 110% 100dmc NOS (OB) red lettering
1 6FW5 $4.00 GE 110% 100dmc NOS (OB) white lettering
1 6FW5 $4.00 GE 110% 100dmc NOS (OB) white lettering
1 6FW5 $4.00 GE 110% 100dmc NOS (OB) white lettering
1 6FW5 $4.00 GE 110% 100dmc NOS (OB) white lettering
1 6FW5 $4.00 Tung-Sol 110% 100dmc NOS (OB) ---
1 6FW5 $4.00 Tung-Sol 100% 100dmc NOS (OB) torn box flap
1 6FW5 $4.00 Tung-Sol 100% 100dmc NOS (OB) water damaged box
1 6FW5 $4.00 Tung-Sol 100% 100dmc NOS (OB) damaged box
1 6FW5 $2.00 GE 100% 90dmc used (ob) white lettering
1 6FW5 $2.00 GE 90% 90dmc used (ob) white 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 $3.00 RCA 110% 4500/4000Gm NOS (OB) grid 'C' clip
1 50FE5 $3.00 RCA 110% 4500/4000Gm NOS (OB) grid 'C' clip
1 50FE5 $3.00 RCA 110% 4200/4000Gm NOS (OB) grid 'C' clip
1 50FE5 $3.00 RCA 100% 4000/4000Gm NOS (OB) grid 'C' clip
1 50FE5 $3.00 Zenith 130% 4400/4000Gm NOS (wb) grid 'C' clip
1 50FE5 $3.00 Zenith 110% 4600/4000Gm NOS (OB) grid 'C' clip
1 50FE5 $3.00 Zenith 110% 4600/4000Gm NOS (OB) grid 'C' clip
1 50FE5 $3.00 Zenith 110% 4500/4000Gm NOS (OB) grid 'C' clip
1 50FE5 $3.00 Zenith 110% 4200/4000Gm NOS (OB) grid 'C' clip
1 50FE5 $3.00 Zenith 120% 4800/4000Gm NOS (OB) grid 'C' clip
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/VT-137 $10.00 RCA 120% 2100/2100Gm NOS (OB) JAN - brown base - grid clip
1 1626/VT-137 $10.00 RCA 120% 2200/2100Gm NOS (OB) JAN - 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

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.
Contact MDB Ventures sales@mdbventures.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 Discount Bargain Packs and Bargain Bin for more savings!

Email: MDB Ventures sales@mdbventures.com