Welcome to MDB Ventures
Audio Tube Store


MDB Ventures Home


Don't forget to visit our
Discount Bargain Packs
and
Bargain Bin
for more savings!


                                                                                                           


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 2C50-GT $12.00 Taylor Tubes 110% / 110% 1850 / 1800: 1900 / 1800Gm used (rb) JAN - grid 'c' clips - brown base
1 6AE5-GT $6.00 Raytheon 120% 1900 / 1200Gm NOS (wb) ---
1 6AE5-GT $6.00 Raytheon 130% 1750 / 1200Gm NOS (OB) sealed in box
1 6AE5-GT $6.00 National Union 110% 1300 / 1200Gm NOS (OB) ---
1 6AE5-GT $3.00 National Union 120% 1400 / 1200Gm used (rb) ---
1 6AE5-GT $3.00 Tung-Sol 130% 1500 / 1200Gm used (wb) rectangular ribbed black plate
1 6AE7-GT $35.00 National Union untested sealed in box NOS (ob) ---
1 6AR6 / 6098 $25.00 Tung-Sol 110% 6250 / 5400Gm NOS (OB) JAN - brown base
1 6AR6 / 6098 $20.00 Tung-Sol 100% 6000 / 5400Gm NOS (OB) JAN - brown base
1 6AR6 $20.00 Tung-Sol 110% 7000 / 5400Gm NOS (OB) JAN - brown base
1 6AR6 $18.00 Tung-Sol 100% 6500 / 5400Gm NOS (OB) JAN - brown base
1 6AR6WA / 6098 $12.00 Tung-Sol 100% 7000 / 5400Gm used (L) JAN - brown base
1 6AR6WA / 6098 $12.00 Tung-Sol 100% 7000 / 5400Gm used (L) JAN - brown base
1 6AR6WA / 6098 $12.00 Tung-Sol 110% 6700 / 5400Gm used (rb) JAN - brown base
1 6AR6WA / 6098 $12.00 Tung-Sol 100% 6500 / 5400Gm used (L) JAN - brown base
1 6AR6 $10.00 Tung-Sol 100% 6500 / 5400Gm used (ob) JAN - brown base
1 6AR6 $10.00 Tung-Sol 100% 6500 / 5400Gm used (rb) JAN - brown base
1 6AR6 $10.00 Tung-Sol 100% 6500 / 5400Gm used (L) JAN - brown base
1 6AR6 $10.00 Tung-Sol 120% 5400 / 5400Gm used (L) JAN - brown base
1 6AR6 $10.00 Tung-Sol 100% 6000 / 5400Gm used (L) JAN - brown base
1 6AR6 $10.00 Tung-Sol 100% 6000 / 5400Gm used (L) JAN - brown base
1 6AR6 $8.00 Tung-Sol 95% 5700 / 5400Gm used (L) JAN - brown base
1 6AR6 $8.00 Tung-Sol 95% 5700 / 5400Gm used (L) brown base
1 6AR6 $7.00 Tung-Sol 90% 5900 / 5400Gm used (L) JAN - brown base
1 6AR6 $7.00 Tung-Sol 90% 5900 / 5400Gm used (L) JAN - brown base
1 6384 / 6AR6 $75.00 Bendix 110% 5400 / 5400Gm used (wb) JAN - ceramic base - ceramic spacers - metal supports - super heavy duty Bendix Red Bank version of 6AR6 (cat:409-3)
1 6384 / 6AR6 $20.00 Bendix 50% 3600 / 5400Gm used (rb) JAN - ceramic base - ceramic spacers - metal supports - super heavy duty Bendix Red Bank version of 6AR6 (cat:409-3)
1 6FH8 $8.00 RCA 120%tet / 120%tri --- NOS (OB) ---
1 6FH8 $8.00 RCA 120%tet / 110%tri --- NOS (OB) ---
1 6FH8 $8.00 RCA 100%tet / 140%tri --- NOS (OB) ---
1 6FH8 $8.00 RCA 130%tet / 110%tri --- NOS (OB) ---
1 6FH8 $8.00 RCA 140%tet / 120%tri --- NOS (OB) ---
1 6FH8 $8.00 RCA 120%tet / 120%tri --- NOS (OB) ---
1 6FH8 $8.00 RCA 130%tet / 110%tri --- NOS (OB) ---
1 6FH8 $8.00 RCA 110%tet / 110%tri --- NOS (OB) ---
1 6FH8 $8.00 RCA 120%tet / 130%tri --- NOS (OB) ---
1 6FH8 $8.00 RCA 110%tet / 110%tri --- NOS (OB) ---
1 6FH8 $8.00 RCA 110%tet / 140%tri --- NOS (OB) ---
1 6FH8 $8.00 RCA 140%tet / 120%tri --- NOS (OB) ---
1 6FH8 $8.00 RCA 110%tet / 130%tri --- NOS (OB) ---
1 6FH8 $8.00 RCA 140%tet / 110%tri --- NOS (OB) ---
1 6FH8 $8.00 RCA 110%tet / 120%tri --- NOS (OB) ---
1 6FH8 $8.00 RCA 120%tet / 120%tri --- NOS (OB) ---
1 6FH8 $8.00 RCA 120%tet / 120%tri --- NOS (OB) ---
1 6FH8 $8.00 RCA 110%tet / 120%tri --- NOS (OB) ---
1 6FH8 $8.00 RCA 100%tet / 110%tri --- NOS (OB) ---
1 6FH8 $8.00 RCA 140%tet / 120%tri --- NOS (OB) ---
1 6FH8 $8.00 RCA 140%tet / 140%tri --- NOS (OB) ---
1 6FH8 $8.00 RCA 120%tet / 120%tri --- NOS (OB) ---
1 6FH8 $8.00 RCA 120%tet / 110%tri --- NOS (OB) ---
1 6FH8 $8.00 RCA 130%tet / 130%tri --- NOS (OB) ---
1 6FH8 $8.00 Zenith 110%tet / 110%tri --- NOS (OB) ---
1 6FH8 $8.00 Sylvania 120%tet / 130%tri --- NOS (OB) ---
1 6FH8 $8.00 Sylvania 100%tet / 140%tri --- NOS (OB) ---
1 6FH8 $8.00 Sylvania 110%tet / 120%tri --- NOS (OB) ---
1 6FH8 $8.00 Sylvania 130%tet / 110%tri --- NOS (OB) ---
1 6FH8 $8.00 Sylvania 120%tet / 110%tri --- NOS (OB) ---
1 6FH8 $8.00 GE 100%tet / 110%tri --- NOS (OB) ---
1 6FH8 $8.00 GE 140%tet / 120%tri --- NOS (OB) ---
1 6FH8 $8.00 Tung-Sol 120%tet / 140%tri --- NOS (OB) ---
1 6FH8 $4.00 GE 130%tet / 90%tri --- used (OB) ---
1 6FH8 $4.00 Sylvania 110%tet / 140%tri --- used (rb) ---
1 6FH8 $4.00 Lowrey 120%tet / 120%tri --- used (rb) ---
1 6SU7GTY $30.00 Tung-Sol 120% / 120% 1200: 1200 / 1200Gm used (wb) JAN - bottom getter - black coat - brown base - round black plates
1 6U6-GT $3.00 National Union 120% 4500 / 4200Gm NOS (OB) black coat
1 6U6-GT $3.00 National Union 120% 4500 / 4200Gm NOS (OB) black coat
1 6U6-GT $3.00 National Union 120% 4500 / 4200Gm NOS (OB) black coat
1 6U6-GT $3.00 Raytheon 120% 4600 / 4200Gm NOS (OB) black coat
1 6U6-GT $3.00 Tung-Sol untested sealed in box NOS (OB) ---
1 6U6-GT $3.00 Raytheon 110% 5600 / 4200Gm used (rb) black coat - grid 'c' clip
1 6U6-GT $3.00 Raytheon 110% 4600 / 4200Gm used (rb) black coat - grid 'c' clip
1 6U6-GT $3.00 Raytheon 130% 4500 / 4200Gm used (rb) black coat
1 6U6-GT $3.00 Tung-Sol 130% 4600 / 4200Gm used (wb) black coat
1 6U6-GT $2.00 Tung-Sol 100% 4600 / 4200Gm used (wb) black coat
1 6U6-GT $1.00 Raytheon 130% 5200 / 4200Gm used (L) black coat - grid 'c' clip - cracked base
1 6U6-GT $1.00 Raytheon 120% 5100 / 4200Gm used (L) black coat - grid 'c' clip - loose base
1 6U6-GT $1.00 Raytheon 100% 4500 / 4200Gm used (L) black coat - grid 'c' clip - loose base
1 6U6-GT $1.00 Sylvania 90% 3400 / 4200Gm used (rb) black coat - green lettering
1 6U6-GT $1.00 Tung-Sol 100% 4600 / 4200Gm used (wb) black coat - loose base
1 6U6-GT $1.00 Tung-Sol 90% 4600 / 4200Gm used (wb) black coat - loose base
1 6U9 / ECF201 $2.00 RCA --- 90 / 100dmc NOS (OB) Holland - mesh shield - missing box flap
1 6U9 / ECF201 $2.00 RCA --- 80 / 100dmc NOS (OB) Holland - mesh shield
1 6U9 / ECF201 $2.00 RCA --- 90 / 100dmc NOS (OB) Holland - mesh shield - missing box flap
1 6U9 / ECF201 $2.00 RCA --- 90 / 110dmc NOS (OB) Holland - mesh shield
1 6U9 / ECF201 $2.00 RCA --- 90 / 90dmc NOS (OB) Holland - mesh shield
1 6U9 / ECF201 $2.00 RCA --- 80 / 110dmc NOS (OB) Holland - mesh shield
1 6U9 / ECF201 $2.00 RCA --- 90 / 110dmc NOS (OB) Holland - mesh shield
1 6U9 / ECF201 $2.00 RCA --- 80 / 90dmc NOS (OB) Japan - 1/2 shield
1 6U9 / ECF201 $2.00 RCA --- 80 / 90dmc NOS (OB) Japan - 1/2 shield - missing box flap
1 6U9 / ECF201 $2.00 RCA --- 80 / 90dmc NOS (OB) Japan - 1/2 shield
1 6U9 / ECF201 $2.00 RCA --- 80 / 100dmc NOS (OB) Holland - mesh shield
1 6U9 / ECF201 $2.00 RCA --- 90 / 100dmc NOS (OB) Holland - mesh shield
1 6U9 / ECF201 $2.00 RCA --- 90 / 100dmc NOS (OB) Holland - mesh shield - missing box flap
1 6U9 / ECF201 $2.00 GE --- 90 / 90dmc NOS (OB) Holland - mesh shield
1 6U9 / ECF201 $2.00 Zenith --- 90 / 100dmc NOS (OB) Holland - mesh shield
1 6U9 / ECF201 $2.00 Zenith --- 90 / 90dmc NOS (OB) Holland - mesh shield
1 6U9 / ECF201 $2.00 Admiral --- 90 / 90dmc NOS (OB) Holland - mesh shield
1 6U9 / ECF201 $2.00 Admiral --- 90 / 100dmc NOS (OB) Holland - mesh shield
1 6U9 / ECF201 $2.00 Admiral --- 90 / 90dmc NOS (OB) Holland - mesh shield
1 6U9 / ECF201 $2.00 Admiral --- 100 / 100dmc NOS (OB) Holland - mesh shield
1 6U9 / ECF201 $1.00 RCA --- 90 / 100dmc used (OB) Holland - mesh shield
1 6U9 / ECF201 $1.00 GE --- 80 / 80dmc used (OB) Holland - mesh shield
1 PCF201 $3.00 Philips --- 110 / 100dmc NOS (OB) (8U9) mesh shield
1 6X9 / ECF200 $2.00 RCA --- 90 / 100dmc NOS (OB) Britian - 1/2 shield
1 6X9 / ECF200 $2.00 RCA --- 80 / 80dmc NOS (OB) Britain - 1/2 shield
1 6X9 / ECF200 $2.00 RCA --- 100 / 100dmc NOS (OB) Japan - 1/2 shield
1 6X9 / ECF200 $2.00 RCA --- 90 / 90dmc NOS (OB) Japan - 1/2 shield
1 6X9 / ECF200 $2.00 RCA --- 90 / 90dmc NOS (OB) Japan - 1/2 shield
1 6X9 / ECF200 $2.00 RCA --- 90 / 90dmc NOS (OB) Japan - 1/2 shield
1 6X9 / ECF200 $2.00 RCA --- 90 / 90dmc NOS (OB) Britian - 1/2 shield
1 6X9 / ECF200 $2.00 RCA --- 80 / 80dmc NOS (OB) Japan - 1/2 shield
1 6X9 / ECF200 $2.00 RCA --- 80 / 90dmc NOS (OB) Britian - 1/2 shield
1 6X9 / ECF200 $2.00 RCA --- 80 / 90dmc NOS (OB) Britian - 1/2 shield
1 6X9 / ECF200 $2.00 RCA --- 80 / 80dmc NOS (OB) Britian - 1/2 shield
1 6X9 / ECF200 $2.00 RCA --- 80 / 100dmc NOS (OB) Japan - 1/2 shield
1 6X9 / ECF200 $2.00 RCA --- 90 / 80dmc NOS (OB) Britian - 1/2 shield
1 6X9 / ECF200 $2.00 Zenith --- 90 / 80dmc NOS (OB) England - 1/2 shield
1 6X9 / ECF200 $2.00 Zenith --- 80 / 80dmc NOS (OB) England - mesh shield
1 6X9 / ECF200 $2.00 Zenith --- 90 / 90dmc NOS (OB) England - mesh shield
1 6X9 / ECF200 $2.00 Zenith --- 100 / 90dmc NOS (OB) Holland - 1/2 shield
1 6X9 / ECF200 $2.00 GE --- 90 / 90dmc NOS (OB) Holland - mesh shield
1 6X9 / ECF200 $2.00 GE --- 90 / 80dmc NOS (OB) Britian - 1/2 shield
1 6X9 / ECF200 $2.00 GE --- 80 / 80dmc NOS (OB) Japna - 1/2 shield
1 6X9 / ECF200 $2.00 International Servicemaster --- 80 / 80dmc NOS (OB) 1/2 shield
1 6X9 / ECF200 $2.00 Sylvania --- 90 / 100dmc NOS (OB) Britian - 1/2 shield
1 6X9 / ECF200 $2.00 Sylvania --- 90 / 90dmc NOS (OB) Japan - 1/2 shield
1 6X9 / ECF200 $2.00 Sylvania --- 110 / 80dmc NOS (OB) Britian - 1/2 shield
1 6X9 / ECF200 $2.00 Sylvania --- 90 / 90dmc NOS (OB) Japan - 1/2 shield
1 6X9 / ECF200 $2.00 Sylvania --- 90 / 90dmc NOS (OB) Britian - 1/2 shield
1 6X9 / ECF200 $2.00 Sylvania --- 100 / 90dmc NOS (OB) Holland - mesh shield
1 6X9 / ECF200 $1.00 GE --- 60 / 70dmc used (rb) Holland - mesh shield
1 6X9 / ECF200 $1.00 Admiral --- 60 / 70dmc used (rb) Holland - mesh shield
1 6X9 / ECF200 $1.00 GE --- 90 / 70dmc used (rb) Holland - 1/2 shield
1 6X9 / ECF200 $1.00 Sylvania --- 70 / 80dmc used (rb) Japan - 1/2 shield
1 PCF200 $3.00 Philips --- 80 / 80dmc NOS (OB) mesh shield
1 PCF200 $1.00 Philips --- 60 / 70dmc used (OB) mesh shield
1 12E5-GT $6.00 National Union 110% 1600 / 2450Gm NOS (OB) metal band base
1 12GB3 $5.00 Westinghouse 130% 100dmc NOS (OB) ---
1 12SX7GT $24.00 RCA 120% / 120% 2500: 2500 / 2000Gm used (rb) bottom getter - rectangular black plates
1 12SX7GT $24.00 RCA 130% / 125% 2800: 2700 / 2000Gm used (wb) JAN - bottom getter - rectangular black plates
1 12SX7GT $24.00 RCA 150% / 150% 3200: 3300 / 2000Gm used (wb) bottom getter - rectangular black plates
1 12SX7GT $20.00 GE 130% / 140% 3200: 3000 / 2000Gm used (wb) JAN - bottom getter - rectangular black plates
1 12SX7GT $20.00 Sylvania 140% / 140% 2800: 2800 / 2000Gm used (rb) JAN - top getter - square black plates
1 26E6WG $7.50 Tung-Sol 110% 7000 / 6000Gm used (L) brown base - JAN
1 26E6WG $5.00 Tung-Sol 110% 7500 / 6000Gm used (L) brown base - JAN - loose base
1 26E6WG $2.00 Tung-Sol 80% 5500 / 6000Gm used (L) brown base - JAN
1 1633 $3.00 RCA 120% / 130% 3200: 3400 / 2600Gm used (wb) gray coat - 25V 6SN7
1 1633 $2.50 RCA 90% / 100% 2500: 2550 / 2600Gm used (wb) gray coat - 25V 6SN7
1 1633 $3.00 RCA 100% / 100% 2600: 2600 / 2600Gm used (wb) gray coat - 25V 6SN7
1 1633 $3.00 Ken-Rad 100% / 100% 2600: 2700 / 2600Gm used (wb) black coat - 25V 6SN7
1 5824 / 25B6 $7.50 GE 110% 4600 / 4000Gm used (wb) (ST) black coat - bottom getter
1 5824 / 25B6 $5.00 GE 110% 4600 / 4000Gm used (wb) (GT) clear glass - top getter
1 7027A $50.00 Realistic 110% 120dmc used (rb) ---
1 7027A $50.00 Realistic 110% 120dmc used (rb) ---
1 7027A $45.00 International Service Master 90% 100dmc used (rb) ---
1 7355 $20.00 RCA 105% 100dmc used (rb) red lettering - grid 'c' clip
1 7408 $25.00 Sylvania 130% 110dmc NOS (OB) gray coat - grid 'c' clip
1 7591 $25.00 Toshiba 110% 100dmc used (wb) ---
1 7591 $25.00 Toshiba 110% 100dmc used (rb) ---
1 7591 $25.00 RCA 115% 100dmc used (wb) red lettering

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.


Go back to the TOP

Don't forget to visit our
Discount Bargain Packs
and
Bargain Bin
for more savings!



Gmail Users
Please read this note about incorrectly declared email as spam.
This can be an issue as well with other free email providers like Hotmail, AOL, and Yahoo.


MDB Ventures Home

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