Welcome to MDB Ventures Audio Tube Store
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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
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1 | 6F6 / VT-66 | $12.00 | RCA | 130% | 2600 / 2000Gm | NOS (wb) | metal tube - JAN |
1 | 6F6 / VT-66 | $12.50 | Ken-Rad for Bendix | untested | heater ok | NOS (OB) | metal tube - US Army - sealed in box |
1 | 6F6 / VT-66 | $12.50 | Ken-Rad for Bendix | untested | heater ok | NOS (OB) | metal tube - US Army - sealed in box |
1 | 6F6 / VT-66 | $12.00 | Ken-Rad for Bendix | 120% | 2400 / 2000Gm | NOS (OB) | metal tube - US Army - damaged box |
1 | 6F6 / VT-66 | $12.00 | Ken-Rad for Bendix | 120% | 2400 / 2000Gm | NOS (OB) | metal tube - US Army - damaged box |
1 | 6F6 | $10.00 | Ken-Rad | 115% | 2300 / 2000Gm | NOS (wb) | metal tube |
1 | 6F6 | $10.00 | CBS | 120% | 2250 / 2000Gm | NOS (wb) | metal tube |
1 | 6F6 | $10.00 | Philco | 125% | 2400 / 2000Gm | NOS (wb) | metal tube |
1 | 6F6 | $10.00 | Philco | 125% | 2400 / 2000Gm | NOS (wb) | metal tube |
1 | 6F6 | $12.00 | GE | 120% | 2500 / 2000Gm | NOS (OB) | metal tube |
1 | 6F6 | $12.00 | GE | 125% | 2650 / 2000Gm | NOS (wb) | metal tube |
1 | 6F6 | $12.00 | Arcturus | 120% | 2500 / 2000Gm | NOS (OB) | metal tube - damaged box |
1 | 6F6 | $12.00 | RCA | 120% | 2500 / 2000Gm | NOS (OB) | metal tube |
1 | 6F6 / VT-66 | $7.50 | Ken-Rad | 110% | 2400 / 2000Gm | used (wb) | metal tube - JAN |
1 | 6F6 / VT-66 | $7.50 | RCA | 120% | 2450 / 2000Gm | used (rb) | metal tube - JAN |
1 | 6F6 / VT-66 | $7.50 | RCA | 115% | 2250 / 2000Gm | used (rb) | metal tube - JAN |
1 | 6F6 / VT-66 | $5.00 | RCA | 130% | 2400 / 2000Gm | used (ob) | metal tube - some rust around base - US Army |
1 | 6F6 / VT-66 | $5.00 | RCA | 120% | 2400 / 2000Gm | used (ob) | metal tube - some rust around base - US Army |
1 | 6F6 / VT-66 | $5.00 | RCA | 125% | 2500 / 2000Gm | used (ob) | metal tube - minor rust - US Army |
1 | 6F6 / VT-66 | $5.00 | RCA | 120% | 2150 / 2000Gm | used (ob) | metal tube - minor rust - US Army |
1 | 6F6 / VT-66 | $5.00 | Ken-Rad | 130% | 2500 / 2000Gm | used (L) | metal tube |
1 | 6F6 / VT-66 | $5.00 | Ken-Rad | 110% | 2150 / 2000Gm | used (L) | metal tube |
1 | 6F6 | $7.00 | GE | 100% | 2100 / 2000Gm | used (ob) | metal tube |
1 | 6F6 | $7.50 | RCA | 150% | 2700 / 2000Gm | used (rb) | metal tube |
1 | 6F6 | $7.50 | RCA | 115% | 2200 / 2000Gm | used (rb) | metal tube |
1 | 6F6 | $7.50 | National Union | 110% | 2450 / 2000Gm | used (rb) | metal tube |
1 | 6F6 | $7.50 | Sylvania | 120% | 2600 / 2000Gm | used (rb) | metal tube |
1 | 6F6 | $7.50 | Philco | 110% | 2200 / 2000Gm | used (wb) | metal tube |
1 | 6F6 | $5.00 | Ken-Rad | 100% | 2250 / 2000Gm | used (wb) | metal tube |
1 | 6F6 | $5.00 | Wards Super Airline | 100% | 2200 / 2000Gm | used (wb) | metal tube |
1 | 6F6 | $7.50 | Sylvania | 120% | 2350 / 2000Gm | used (L) | metal tube |
1 | 6F6 | $7.50 | Ken-Rad | 120% | 2400 / 2000Gm | used (L) | metal tube - minor rust on tube |
1 | 6F6 | $7.50 | National Union | 130% | 2500 / 2000Gm | used (L) | metal tube |
1 | 6F6 | $7.50 | RCA | 110% | 2400 / 2000Gm | used (L) | metal tube |
1 | 6F6 | $7.50 | RCA | 120% | 2200 / 2000Gm | used (L) | metal tube |
1 | 6F6 | $7.00 | GE | 120% | 2500 / 2000Gm | used (L) | metal tube |
1 | 6F6 | $7.00 | Sylvania | 115% | 2400 / 2000Gm | used (L) | metal tube |
1 | 6F6 | $7.00 | Sylvania | 110% | 2400 / 2000Gm | used (L) | metal tube |
1 | 6F6 | $7.00 | Wards Airline | 115% | 2400 / 2000Gm | used (L) | metal tube |
1 | 6F6 | $7.00 | Wards Super Airline | 125% | 2600 / 2000Gm | used (L) | metal tube |
1 | 6F6 | $7.00 | Firestone Air Chief | 130% | 2600 / 2000Gm | used (L) | metal tube |
1 | 6F6 | $7.00 | Raytheon | 120% | 1900 / 2000Gm | used (L) | metal tube |
1 | 6F6 | $5.00 | Wards Airline | 100% | 2400 / 2000Gm | used (L) | metal tube |
1 | 6F6 | $5.00 | National Union | 100% | 2000 / 2000Gm | used (L) | metal tube |
1 | 6F6 | $5.00 | National Union | 100% | 2100 / 2000Gm | used (L) | metal tube |
1 | 6F6 | $5.00 | Philco | 100% | 2200 / 2000Gm | used (ob) | metal tube |
1 | 6F6 / VT-66 | $5.00 | Ken-Rad | 110% | 2200 / 2000Gm | used (L) | metal tube - JAN |
1 | 6F6 / VT-66 | $5.00 | GE | 130% | 2600 / 2000Gm | used (L) | metal tube |
1 | 6F6 / VT-66 | $5.00 | GE | 130% | 2350 / 2000Gm | used (L) | metal tube |
1 | 6F6 / VT-66 | $5.00 | RCA | 120% | 2350 / 2000Gm | used (L) | metal tube - JAN |
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1 | 6F6-G / VT-66-A | $40.00 | RCA | 120% | 2300 / 2000Gm | NOS (OB) | gray coat - torn box flap |
1 | 6F6-G | $35.00 | National Union | 130% | 2500 / 2000Gm | NOS (wb) | engraved base - ribbed black plate |
1 | 6F6-G | $35.00 | Ceco | 140% | 2700 / 2000Gm | NOS (wb) | gray coat |
1 | 6F6-G | $15.00 | National Union | 110% | 2000 / 2000Gm | used (L) | gray coat |
1 | 6F6-G | $12.00 | RCA | 90% | 2100 / 2000Gm | used (L) | ribbed black plate - dark brown base |
1 | 6F6-G | $12.00 | Zenith | 90% | 1800 / 2000Gm | used (L) | gray coat |
1 | 6F6-G | $12.00 | Sylvania | 90% | 1600 / 2000Gm | used (L) | ribbed black plate |
1 | 6F6-G | $12.00 | Philco | 90% | 1750 / 2000Gm | used (L) | ribbed black plate |
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1 | 6F6-GT | $15.00 | CBS | 120% | 2150 / 2000Gm | NOS (wb) | silver top - black plate |
1 | 6F6-GT | $15.00 | Sylvania | 130% | 2450 / 2000Gm | NOS (ob) | torn box flap - ribbed gray plate |
1 | 6F6-GT | $15.00 | GE | 130% | 2450 / 2000Gm | NOS (OB) | black plate |
1 | 6F6-GT | $15.00 | National Union | 120% | 2300 / 2000Gm | NOS (ob) | black coat |
1 | 6F6-GT | $15.00 | National Union | 120% | 2200 / 2000Gm | NOS (ob) | black coat |
1 | 6F6-GT | $15.00 | RCA | 115% | 2400 / 2000Gm | NOS (wb) | silver top - black plate |
1 | 6F6-GT | $10.00 | RCA | 110% | 2200 / 2000Gm | used (OB) | gray coat |
1 | 6F6-GT | $10.00 | GE | 120% | 2450 / 2000Gm | used (rb) | black coat |
1 | 6F6-GT | $10.00 | GE | 110% | 2500 / 2000Gm | used (rb) | black plate |
1 | 6F6-GT | $10.00 | Tung-Sol | 110% | 2000 / 2000Gm | used (rb) | black coat |
1 | 6F6-GT | $10.00 | National Union | 110% | 2200 / 2000Gm | used (ob) | black coat |
1 | 6F6-GT | $10.00 | Philco | 100% | 2200 / 2000Gm | used (rb) | gray coat |
1 | 6F6-GT | $2.50 | RCA | 110% | 2350 / 2000Gm | used (rb) | gray coat - cracked base - broken locator pin |
1 | 6F6-GT | $5.00 | National Union | 90% | 1700 / 2000Gm | used (L) | black coat - loose base |
1 | 6F6-GT | $8.00 | National Union | 100% | 1700 / 2000Gm | used (L) | gray coat - grid clip |
1 | 6F6-GT | $10.00 | National Union | 110% | 2100 / 2000Gm | used (L) | gray coat - metal band base - grid clip |
1 | 6F6-GT | $10.00 | Tung-Sol | 100% | 2000 / 2000Gm | used (L) | gray coat |
1 | 6F6-GT | $7.50 | Tung-Sol | 130% | 2450 / 2000Gm | used (L) | gray coat - loose base |
1 | 6F6-GT | $10.00 | Sylvania | 125% | 2300 / 2000Gm | used (L) | clear glass - green lettering - grid 'c' clip |
1 | 6F6-GT | $10.00 | Sylvania | 125% | 2500 / 2000Gm | used (L) | clear glass - yellow lettering - chrome top |
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1 | 1611 | $20.00 | RCA | 130% | 2500 / 2000Gm | NOS (OB) | metal tube - special 6F6 |
1 | 1611 | $20.00 | RCA | 140% | 2800 / 2000Gm | NOS (OB) | metal tube - special 6F6 |
1 | 1611 | $5.00 | RCA | 120% | 2200 / 2000Gm | used (OB) | metal tube - minor rust on tube - special 6F6 |
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1 | 1613 / VT-175 | $15.00 | RCA | 120% | 2400 / 2000Gm | NOS (OB) | metal tube - special 6F6 |
1 | 1613 / VT-175 | $15.00 | RCA | 130% | 2400 / 2000Gm | NOS (OB) | metal tube - special 6F6 |
1 | 1613 / VT-175 | $15.00 | RCA | 120% | 2500 / 2000Gm | NOS (OB) | metal tube - special 6F6 - JAN |
1 | 1613 / VT-175 | $15.00 | RCA | 120% | 2600 / 2000Gm | NOS (OB) | metal tube - special 6F6 - JAN |
1 | 1613 / VT-175 | $8.00 | RCA | 120% | 2250 / 2000Gm | used (OB) | metal tube - special 6F6 |
1 | 1613 / VT-175 | $8.00 | RCA | 120% | 2300 / 2000Gm | used (rb) | metal tube - special 6F6 |
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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Discount Bargain Packs
and
Bargain Bin
for more savings!
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