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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 6X5 $12.00 National Union 95% / 100% --- used (rb) (M) metal
1 6X5-WGT $7.50 Sylvania 110% / 110% --- NOS (wb) (GT) silver lettering - brown base - JAN
1 6X5-WGT $7.50 Sylvania 110% / 110% --- NOS (OB) (GT) silver lettering - brown base - JAN
1 6X5-WGT $7.50 Sylvania 110% / 110% --- NOS (OB) (GT) silver lettering - brown base - JAN
1 6X5-WGT $7.50 Sylvania 110% / 110% --- NOS (OB) (GT) green lettering - brown base - JAN
1 6X5-WGT $7.50 Sylvania 110% / 110% --- NOS (OB) (GT) green lettering - black base - JAN
1 6X5-WGT $7.50 Sylvania 110% / 110% --- NOS (wb) (GT) green lettering - black base - JAN
1 6X5-WGT $7.50 Sylvania 110% / 110% --- NOS (wb) (GT) green lettering - black base - JAN
1 6X5-WGT $7.50 Sylvania 110% / 110% --- NOS (OB) (GT) green lettering - brown base - JAN
1 6X5-WGT $7.50 Sylvania 110% / 110% --- NOS (wb) (GT) green lettering - brown base - JAN
1 6X5-WGT $7.50 Sylvania 110% / 110% --- NOS (wb) (GT) green lettering - brown base - JAN
1 6X5-WGT $7.50 Raytheon 110% / 110% --- NOS (wb) (GT) brown base - JAN
1 6X5-WGT $5.00 Sylvania 100% / 100% --- used (wb) (GT) green lettering - brown base - JAN
1 6X5-WGT $5.00 Raytheon 100% / 100% --- used (wb) (GT) brown base - JAN
1 6X5-WGT $5.00 Raytheon 100% / 100% --- used (rb) (GT) brown base - JAN
1 6X5-GT / VT-126-B $7.50 Sylvania 110% / 110% --- NOS (OB) (GT) white lettering - JAN
1 6X5-GT / VT-126-B $7.50 Sylvania 120% / 120% --- NOS (OB) (GT) white lettering - JAN
1 6X5-GT / VT-126-B $7.50 National Union 110% / 110% --- NOS (OB) (GT) JAN
1 6X5-GT / VT-126-B $5.00 Sylvania 110% / 110% --- used (wb) (GT) white lettering - JAN
1 6X5-GT / VT-126-B $5.00 Sylvania 110% / 110% --- used (wb) (GT) white lettering - JAN
1 6X5-GT / VT-126-B $5.00 Sylvania 115% / 120% --- used (wb) (GT) white lettering - JAN
1 6X5-GT / VT-126-B $5.00 Sylvania 120% / 120% --- used (rb) (GT) green lettering - JAN
1 6X5-GT / VT-126-B $5.00 Sylvania 110% / 110% --- used (rb) (GT) white lettering - JAN
1 6X5-GT $5.00 Sylvania 110% / 110% --- NOS (OB) (GT) green lettering - JAN
1 6X5-GT $5.00 unknown untested sealed in box NOS (OB) (GT) JAN
1 6X5-GT $5.00 Sylvania 110% / 110% --- NOS (OB) (GT) white lettering - US Navy
1 6X5-GT $5.00 Sylvania 110% / 110% --- NOS (wb) (GT) green lettering - FAA
1 6X5-GT $5.00 FAA 110% / 110% --- NOS (OB) (GT) FAA
1 6X5-GT $5.00 GE 110% / 110% --- NOS (wb) (GT) white lettering - JAN
1 6X5-GT $5.00 US Navy 110% / 110% --- NOS (ob) (GT) ---
1 6X5-GT $5.00 Sylvania 110% / 115% --- NOS (OB) (GT) yellow lettering - button base
1 6X5-GT $5.00 Philco 110% / 110% --- NOS (OB) (GT) ---
1 6X5-GT $5.00 Philco 110% / 110% --- NOS (OB) (GT) ---
1 6X5-GT $5.00 Philco 110% / 110% --- NOS (OB) (GT) ---
1 6X5-GT $5.00 Philco 110% / 110% --- NOS (OB) (GT) ---
1 6X5-GT $5.00 National Union 110% / 110% --- NOS (OB) (GT) ---
1 6X5-GT $5.00 Sylvania 110% / 110% --- NOS (wb) (GT) green lettering - Industrial
1 6X5-GT $5.00 GE 110% / 110% --- NOS (OB) (GT) white lettering
1 6X5-GT $5.00 GE 110% / 110% --- NOS (OB) (GT) white lettering
1 6X5-GT $5.00 GE 110% / 110% --- NOS (OB) (GT) white lettering
1 6X5-GT $5.00 GE 110% / 110% --- NOS (OB) (GT) white lettering
1 6X5-GT $5.00 GE 110% / 110% --- NOS (OB) (GT) white lettering
1 6X5-GT $5.00 GE 110% / 110% --- NOS (OB) (GT) white lettering
1 6X5-GT $5.00 GE 110% / 110% --- NOS (OB) (GT) white lettering
1 6X5-GT $3.00 Sylvania 110% / 110% --- used (wb) (GT) green lettering
1 6X5-GT $3.00 Sylvania 110% / 110% --- used (wb) (GT) green lettering
1 6X5-GT $3.00 Sylvania 110% / 110% --- used (wb) (GT) green lettering
1 6X5-GT $3.00 Sylvania 110% / 110% --- used (rb) (GT) green lettering
1 6X5-GT $3.00 Sylvania 110% / 100% --- used (rb) (GT) green lettering
1 6X5-GT $3.00 Sylvania 110% / 110% --- used (rb) (GT) green lettering
1 6X5-GT $3.00 Sylvania 105% / 105% --- used (rb) (GT) yellow lettering
1 6X5-GT $3.00 RCA 110% / 110% --- used (rb) (GT) silver lettering
1 6X5-GT $3.00 RCA 110% / 110% --- used (rb) (GT) silver lettering
1 6X5-GT $3.00 RCA 110% / 120% --- used (rb) (GT) silver lettering
1 6X5-GT $3.00 RCA 120% / 120% --- used (rb) (GT) silver lettering
1 6X5-GT $3.00 RCA 120% / 110% --- used (rb) (GT) silver lettering
1 6X5-GT $3.00 RCA 100% / 110% --- used (rb) (GT) silver lettering
1 6X5-GT $3.00 RCA 100% / 100% --- used (rb) (GT) silver lettering
1 6X5-GT $3.00 RCA 110% / 110% --- used (rb) (GT) silver lettering
1 6X5-GT $3.00 RCA 120% / 110% --- used (rb) (GT) silver lettering
1 6X5-GT $3.00 RCA 120% / 110% --- used (rb) (GT) silver lettering
1 6X5-GT $3.00 RCA 120% / 110% --- used (rb) (GT) silver lettering
1 6X5-GT $3.00 RCA 120% / 120% --- used (rb) (GT) red lettering
1 6X5-GT $3.00 RCA 120% / 120% --- used (rb) (GT) red lettering
1 6X5-GT $3.00 RCA 110% / 110% --- used (rb) (GT) red lettering
1 6X5-GT $3.00 RCA 120% / 125% --- used (rb) (GT) red lettering
1 6X5-GT $3.00 RCA 130% / 130% --- used (rb) (GT) red lettering
1 6X5-GT $3.00 RCA 120% / 120% --- used (rb) (GT) red lettering
1 6X5-GT $3.00 RCA 110% / 120% --- used (rb) (GT) red lettering
1 6X5-GT $3.00 RCA 120% / 120% --- used (rb) (GT) red lettering
1 6X5-GT $3.00 RCA 120% / 120% --- used (rb) (GT) red lettering
1 6X5-GT $3.00 RCA 120% / 120% --- used (rb) (GT) red lettering
1 6X5-GT $3.00 RCA 120% / 120% --- used (rb) (GT) red lettering
1 6X5-GT $3.00 GE 110% / 120% --- used (ob) (GT) white lettering
1 6X5-GT $3.00 GE 110% / 110% --- used (ob) (GT) white lettering
1 6X5-GT $3.00 GE for Eico 110% / 110% --- used (rb) (GT) white lettering
1 6X5-GT $3.00 GE 110% / 110% --- used (rb) (GT) white lettering
1 6X5-GT $3.00 GE 100% / 100% --- used (rb) (GT) white lettering
1 6X5-GT $3.00 Concord 100% / 100% --- used (ob) (GT) ---
1 6X5-GT $3.00 Admiral 100% / 110% --- used (rb) (GT) ---
1 6X5-GT $3.00 CBS / Hytron 110% / 110% --- used (rb) (GT) ---
1 6X5-GT $3.00 Silvertone 110% / 110% --- used (rb) (GT) ---
1 6X5-GT $3.00 GM / Delco 110% / 110% --- used (rb) (GT) ---
1 6X5-GT $3.00 Wards Super Airline 115% / 120% --- used (rb) (GT) ---
1 6X5-GT $3.00 Raytheon 100% / 100% --- used (rb) (GT) ---
1 6X5-GT $3.00 Raytheon 115% / 110% --- used (rb) (GT) ---
1 6X5-GT $3.00 Raytheon 110% / 110% --- used (rb) (GT) ---
1 6X5-GT $3.00 Ken-Rad 120% / 120% --- used (rb) (GT) ---
1 6X5-GT $3.00 RCA Victor 110% / 110% --- used (rb) (GT) ---
1 6X5-GT $3.00 Motorola 110% / 115% --- used (rb) (GT) ---
1 6X5-GT $3.00 Motorola 115% / 115% --- used (rb) (GT) ---
1 6X5-GT $3.00 Motorola 110% / 100% --- used (L) (GT) ---
1 6X5-GT $3.00 FoMoCo 110% / 110% --- used (wb) (GT) ---
1 6X5-GT $3.00 FoMoCo 120% / 110% --- used (rb) (GT) ---
1 6X5-GT $3.00 FM Co 110% / 110% --- used (wb) (GT) ---
1 6X5-GT $3.00 FM Co 110% / 110% --- used (rb) (GT) ---
1 6X5-GT $3.00 FM Co 110% / 110% --- used (rb) (GT) ---
1 6X5-GT $3.00 FM Co 110% / 110% --- used (rb) (GT) ---
1 6X5-GT $2.00 unknown 110% / 110% --- used (rb) (GT) ---
1 6X5-GT $2.00 unknown 110% / 110% --- used (rb) (GT) ---
1 6X5-GT $2.00 unknown 110% / 110% --- used (rb) (GT) ---

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