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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 6C5 $7.50 RCA / Cunningham 120% 2300 / 2000Gm used (wb) metal - stamped name and logo on tube - shoulder top
1 6C5 $7.50 RCA / Cunningham 110% 2100 / 2000Gm used (rb) metal - stamped name and logo on tube - shoulder top
1 6C5 $5.00 National Union 120% 2200 / 2000Gm used (rb) metal - shoulder top - stamped number
1 6C5 $2.50 RCA 115% 2100 / 2000Gm used (wb) metal - silver lettering - shoulder top
1 6C5 $2.50 RCA 120% 2100 / 2000Gm used (rb) metal - silver lettering - shoulder top
1 6C5 $2.50 National Union 120% 2250 / 2000Gm used (rb) metal - shoulder top
1 6C5 $2.50 National Union 115% 2100 / 2000Gm used (L) metal - shoulder top
1 6C5 $2.50 Sylvania 110% 2100 / 2000Gm used (L) metal - shoulder top - white lettering
1 6C5 $2.50 National Union 100% 2000 / 2000Gm used (L) metal - shoulder top - stamped number
1 6C5 $2.50 National Union 130% 2150 / 2000Gm used (L) metal - shoulder top - stamped number
1 6C5 $2.50 National Union 100% 2200 / 2000Gm used (L) metal - shoulder top - stamped number
1 6C5 $2.50 RCA 110% 2200 / 2000Gm used (L) metal - silver lettering - shoulder top
1 6C5 / VT-65 $1.50 RCA 90% 1700 / 2000Gm used (L) metal - silver lettering - shoulder top
1 6C5-GT $3.00 RCA 140% 2800 / 2000Gm NOS (OB) metal base band - black lettering
1 6C5-GT $5.00 RCA 120% 2200 / 2000Gm NOS (OB) metal base band - black lettering - damaged box
1 6C5-GT $5.00 Sylvania 130% 2400 / 2000Gm NOS (OB) metal base band - green lettering
1 6C5-GT $5.00 Sylvania 120% 2200 / 2000Gm NOS (OB) metal base band - green lettering
1 6C5-GT $5.00 Sylvania 130% 2300 / 2000Gm NOS (OB) metal base band - green lettering
1 6C5-GT $5.00 Hyvac 130% 2200 / 2000Gm NOS (OB) metal base band
1 6C5-GT $5.00 Tung-Sol 110% 2000 / 2000Gm NOS (OB) metal base band
1 6C5-GT $5.00 Hytron 110% 2150 / 2000Gm NOS (OB) metal base band
1 6C5-GT $5.00 National Union 110% 2000 / 2000Gm NOS (OB) metal base band - damaged box
1 6C5-GT $2.50 Raytheon 120% 2250 / 2000Gm used (OB) metal base band
1 6C5-GT $2.50 Hytron 120% 2150 / 2000Gm used (L) metal base band - JAN
1 6C5-GT $2.50 Hytron 115% 2250 / 2000Gm used (L) metal base band
1 6C5-GT $2.50 Tung-Sol 110% 2000 / 2000Gm used (L) metal base band
1 6C5-GT $2.50 Philco 140% 2800 / 2000Gm used (L) metal base band
1 6C5 / VT-65 $3.00 RCA 110% 2000 / 2000Gm NOS (OB) metal - US Army
1 6C5 / VT-65 $3.00 RCA 115% 2100 / 2000Gm NOS (OB) metal - US Army
1 6C5 / VT-65 $3.00 RCA 120% 2150 / 2000Gm NOS (wb) metal - US Army
1 6C5 / VT-65 $3.00 RCA 120% 2100 / 2000Gm NOS (OB) metal - US Army
1 6C5 / VT-65 $3.00 RCA 120% 2100 / 2000Gm NOS (OB) metal - US Army
1 6C5 / VT-65 $3.00 RCA 115% 2100 / 2000Gm NOS (OB) metal - US Army
1 6C5 / VT-65 $3.00 RCA 115% 2150 / 2000Gm NOS (OB) metal - US Army
1 6C5 / VT-65 $3.00 RCA 120% 2350 / 2000Gm NOS (OB) metal - US Army - sealed in box
1 6C5 / VT-65 $3.00 RCA 110% 2000 / 2000Gm NOS (OB) metal - US Army - sealed in box
1 6C5 / VT-65 $3.00 Ken-Rad 120% 2200 / 2000Gm NOS (OB) metal - JAN
1 6C5 / VT-65 $3.00 Ken-Rad 130% 2300 / 2000Gm NOS (OB) metal - JAN - sealed in box
1 6C5 / VT-65 $3.00 Ken-Rad 120% 2200 / 2000Gm NOS (OB) metal - JAN - sealed in box
1 6C5 / VT-65 $3.00 Ken-Rad 130% 2300 / 2000Gm NOS (OB) metal - US Army - sealed in box
1 6C5 / VT-65 $3.00 Ken-Rad 120% 2300 / 2000Gm NOS (OB) metal - US Army - sealed in box
1 6C5 / VT-65 $3.00 Ken-Rad untested sealed in box NOS (OB) metal - US Army
1 6C5 / VT-65 $3.00 Ken-Rad 120% 2300 / 2000Gm NOS (OB) metal - JAN
1 6C5 / VT-65 $3.00 Ken-Rad 120% 2250 / 2000Gm NOS (OB) metal - JAN
1 6C5 / VT-65 $3.00 Farnsworth Radio 120% 2300 / 2000Gm NOS (OB) metal - US Army - sealed in box
1 6C5 / VT-65 $3.00 Hygrade Sylvania 120% 2200 / 2000Gm NOS (OB) metal - US Armyy - sealed in box
1 6C5 / VT-65 $1.50 RCA 110% 2100 / 2000Gm used (rb) metal - US Army
1 6C5 / VT-65 $1.50 RCA 110% 2100 / 2000Gm used (rb) metal - JAN
1 6C5 / VT-65 $1.50 RCA 120% 2250 / 2000Gm used (rb) metal - JAN
1 6C5 / VT-65 $1.50 RCA 100% 1900 / 2000Gm used (wb) metal
1 6C5 $3.00 RCA 120% 2200 / 2000Gm NOS (OB) metal - silver lettering
1 6C5 $3.00 RCA 120% 2100 / 2000Gm NOS (OB) metal - red lettering
1 6C5 $3.00 RCA 120% 2100 / 2000Gm NOS (OB) metal - red lettering - JAN
1 6C5 $3.00 RCA 120% 2150 / 2000Gm NOS (OB) metal - red lettering - JAN - missing box flap
1 6C5 $3.00 RCA 120% 2250 / 2000Gm NOS (OB) metal - silver lettering - JAN
1 6C5 $3.00 RCA 120% 2100 / 2000Gm NOS (OB) metal - red lettering - JAN
1 6C5 $3.00 RCA 120% 2200 / 2000Gm NOS (OB) metal - red lettering - JAN
1 6C5 $3.00 RCA 120% 2200 / 2000Gm NOS (OB) metal - red lettering - JAN
1 6C5 $3.00 RCA 120% 2100 / 2000Gm NOS (OB) metal - red lettering - JAN
1 6C5 $3.00 RCA 120% 2200 / 2000Gm NOS (OB) metal - silver lettering - JAN
1 6C5 $3.00 RCA 120% 2250 / 2000Gm NOS (OB) metal - red lettering - JAN
1 6C5 $3.00 RCA 130% 2250 / 2000Gm NOS (OB) metal - silver lettering
1 6C5 $3.00 RCA 120% 2100 / 2000Gm NOS (OB) metal - silver lettering - missing box flap
1 6C5 $3.00 RCA 115% 2100 / 2000Gm NOS (OB) metal - red lettering
1 6C5 $3.00 RCA 120% 2200 / 2000Gm NOS (OB) metal - silver lettering - JAN
1 6C5 $3.00 RCA 120% 2200 / 2000Gm NOS (OB) metal - silver lettering
1 6C5 $3.00 RCA 120% 2250 / 2000Gm NOS (OB) metal - red lettering
1 6C5 $3.00 RCA 120% 2100 / 2000Gm NOS (OB) metal - red lettering
1 6C5 $3.00 RCA 115% 2050 / 2000Gm NOS (OB) metal - silver lettering - JAN
1 6C5 $3.00 RCA 115% 2200 / 2000Gm NOS (wb) metal - silver lettering
1 6C5 $3.00 RCA 120% 2200 / 2000Gm NOS (OB) metal - silver lettering
1 6C5 $3.00 RCA 120% 2100 / 2000Gm NOS (OB) metal - silver lettering
1 6C5 $3.00 GE 120% 2000 / 2000Gm NOS (OB) metal - white lettering
1 6C5 $3.00 GE 120% 2300 / 2000Gm NOS (OB) metal - white lettering
1 6C5 $3.00 GE 110% 2000 / 2000Gm NOS (OB) metal - white lettering
1 6C5 $3.00 GE 110% 2000 / 2000Gm NOS (OB) metal - white lettering
1 6C5 $3.00 GE 110% 2000 / 2000Gm NOS (OB) metal - white lettering
1 6C5 $3.00 GE 115% 2100 / 2000Gm NOS (OB) metal - white lettering
1 6C5 $3.00 GE 110% 2150 / 2000Gm NOS (OB) metal - white lettering - JAN
1 6C5 $3.00 Sylvania 130% 2400 / 2000Gm NOS (OB) metal - green lettering
1 6C5 $3.00 Sylvania 120% 2200 / 2000Gm NOS (OB) metal - yellow lettering
1 6C5 $3.00 Sylvania 120% 2300 / 2000Gm NOS (OB) metal - yellow lettering
1 6C5 $3.00 Raytheon 130% 2400 / 2000Gm NOS (OB) metal
1 6C5 $3.00 Raytheon 110% 2100 / 2000Gm NOS (OB) metal
1 6C5 $3.00 National Electronics 120% 2100 / 2000Gm NOS (OB) metal
1 6C5 $3.00 Tung-Sol 120% 2150 / 2000Gm NOS (OB) metal
1 6C5 $3.00 Tung-Sol 110% 2450 / 2000Gm NOS (OB) metal
1 6C5 $3.00 Westinghouse 125% 2300 / 2000Gm NOS (OB) metal
1 6C5 $3.00 Westinghouse 110% 2000 / 2000Gm NOS (OB) metal - silver lettering
1 6C5 $3.00 Dumont 100% 2000 / 2000Gm NOS (OB) metal
1 6C5 $3.00 Philco 100% 1950 / 2000Gm NOS (OB) metal
1 6C5 $3.00 Arcturus 115% 2300 / 2000Gm NOS (OB) metal - damaged box
1 6C5 $1.50 RCA 130% 2200 / 2000Gm used (wb) metal - silver lettering
1 6C5 $1.50 RCA 105% 1900 / 2000Gm used (OB) metal - silver lettering
1 6C5 $1.50 RCA 100% 1900 / 2000Gm used (OB) metal - red lettering
1 6C5 $1.50 Raytheon 120% 2200 / 2000Gm used (rb) metal
1 6C5 $1.50 National Union 120% 2150 / 2000Gm used (rb) metal
1 6C5 $1.50 National Union 120% 1900 / 2000Gm used (rb) metal
1 6C5 $1.50 Cunningham 110% 2100 / 2000Gm used (rb) metal
1 6C5 $1.50 Cunningham 130% 2400 / 2000Gm used (rb) metal
1 6C5 / VT-65 $1.50 RCA 120% 2200 / 2000Gm used (L) metal - JAN
1 6C5 / VT-65 $1.50 RCA 110% 2100 / 2000Gm used (L) metal - US Army
1 6C5 / VT-65 $1.50 RCA 110% 2300 / 2000Gm used (L) metal - JAN
1 6C5 / VT-65 $1.50 RCA 110% 2100 / 2000Gm used (ob) metal - US Army
1 6C5 $1.50 RCA 115% 2250 / 2000Gm used (L) metal - silver lettering
1 6C5 $1.50 RCA 110% 2100 / 2000Gm used (L) metal - silver lettering
1 6C5 $1.50 RCA 120% 2200 / 2000Gm used (L) metal - silver lettering
1 6C5 $1.50 RCA 110% 2100 / 2000Gm used (L) metal - silver lettering
1 6C5 $1.50 RCA 120% 2200 / 2000Gm used (L) metal - silver lettering
1 6C5 $1.50 RCA 120% 2200 / 2000Gm used (L) metal - silver lettering
1 6C5 $1.50 RCA 110% 2300 / 2000Gm used (L) metal - silver lettering
1 6C5 $1.50 RCA 110% 2100 / 2000Gm used (L) metal - silver lettering
1 6C5 $1.50 RCA 105% 2100 / 2000Gm used (L) metal - silver lettering
1 6C5 $1.50 RCA 120% 2300 / 2000Gm used (L) metal - silver lettering
1 6C5 $1.50 RCA 110% 1900 / 2000Gm used (L) metal - silver lettering
1 6C5 $1.50 RCA 110% 2200 / 2000Gm used (L) metal - silver lettering
1 6C5 $1.50 RCA 120% 2300 / 2000Gm used (L) metal - silver lettering
1 6C5 $1.50 RCA 110% 2200 / 2000Gm used (L) metal - silver lettering
1 6C5 $1.50 RCA 110% 2200 / 2000Gm used (L) metal - silver lettering
1 6C5 $1.50 GE 100% 2100 / 2000Gm used (L) metal - white lettering
1 6C5 $1.50 GE 120% 2300 / 2000Gm used (L) metal - white lettering
1 6C5 $1.50 Sylvania 115% 2200 / 2000Gm used (L) metal - yellow lettering
1 6C5 $1.50 CBS 105% 2200 / 2000Gm used (L) metal
1 6C5 $1.50 Ken-Rad 120% 2300 / 2000Gm used (L) metal
1 6C5 $1.50 Ken-Rad 120% 2200 / 2000Gm used (L) metal
1 6C5 $1.50 Ken-Rad 110% 2150 / 2000Gm used (L) metal
1 6C5 $1.50 Ken-Rad 100% 2000 / 2000Gm used (L) metal
1 6C5 $1.50 Ken-Rad 110% 2100 / 2000Gm used (L) metal
1 6C5 / VT-65 $1.50 Ken-Rad 110% 2200 / 2000Gm used (L) metal - JAN
1 6C5 / VT-65 $1.50 Ken-Rad 100% 1750 / 2000Gm used (L) metal - JAN
1 6C5 / VT-65 $1.50 Ken-Rad 125% 2600 / 2000Gm used (L) metal
1 6C5 / VT-65 $1.50 Ken-Rad 130% 2600 / 2000Gm used (L) metal - JAN
1 6C5 / VT-65 $1.50 Ken-Rad 125% 2400 / 2000Gm used (L) metal
1 6C5 / VT-65 $1.50 Ken-Rad 130% 2400 / 2000Gm used (L) metal
1 6C5 / VT-65 $1.50 Ken-Rad 120% 2200 / 2000Gm used (L) metal - JAN
1 6C5 / VT-65 $1.50 Ken-Rad 120% 2300 / 2000Gm used (L) metal - JAN
1 6C5-GT $1.00 Raytheon 95% 1600 / 2000Gm used (rb) metal base band
1 6C5-GT $1.00 Hytron (Bantam) 120% 2150 / 2000Gm used (OB) metal base band - band split
1 6C5-GT $1.00 Silvertone 90% 1500 / 2000Gm used (L) metal base band
1 6C5 / VT-65 $1.00 RCA 95% 2000 / 2000Gm used (L) metal - US Army
1 6C5 / VT-65 $1.00 RCA 95% 2000 / 2000Gm used (L) metal - US Army
1 6C5 $0.50 Raytheon 90% 1500 / 2000Gm used (rb) metal
1 6C5 $0.50 RCA 90% 2300 / 2000Gm used (rb) metal - silver lettering
1 6C5 $0.50 RCA 90% 1500 / 2000Gm used (OB) metal - silver lettering
1 6C5 $0.50 Delco 90% 1600 / 2000Gm used (rb) metal
1 6C5 $0.50 Delco 90% 1800 / 2000Gm used (rb) metal
1 6C5 $0.50 National Union 90% 1900 / 2000Gm used (OB) metal
1 6C5 $0.50 National Union 90% 1800 / 2000Gm used (OB) metal
1 6C5 / VT-65 $0.50 RCA 90% 1700 / 2000Gm used (L) metal - JAN
1 6C5 / VT-65 $0.50 Ken-Rad 90% 1900 / 2000Gm used (L) metal - JAN
1 6C5 / VT-65 $0.50 RCA 120% 2200 / 2000Gm used (rb) metal - US Army - minor rust on tube
1 6C5 / VT-65 $0.50 Ken-Rad 130% 2400 / 2000Gm used (rb) metal - JAN - minor rust on tube
1 6C5 $0.50 RCA 120% 2300 / 2000Gm used (OB) metal - silver lettering - JAN - minor rust on tube
1 6C5 $0.50 Ken-Rad 120% 2250 / 2000Gm used (OB) metal - JAN - minor rust on tube
1 6C5 $1.50 unknown 120% 2150 / 2000Gm used (rb) metal - minor rust on tube

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



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