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 6AV5-GA $5.00 RCA 110% 4300 / 3900 NOS (OB) silver lettering - grid 'c' clip
1 6AV5-GA $5.00 RCA 120% 4700 / 3900 NOS (OB) red lettering - grid 'c' clip
1 6AV5-GA $5.00 RCA 120% 4500 / 3900 NOS (OB) red lettering
1 6AV5-GA $5.00 RCA 120% 4600 / 3900 NOS (OB) red lettering
1 6AV5-GA $5.00 RCA 120% 4200 / 3900 NOS (OB) red lettering
1 6AV5-GA $5.00 RCA 120% 4200 / 3900 NOS (OB) red lettering
1 6AV5-GA $5.00 RCA 110% 4200 / 3900 NOS (OB) red lettering
1 6AV5-GA $5.00 RCA 120% 4200 / 3900 NOS (OB) red lettering
1 6AV5-GA $5.00 RCA 110% 4200 / 3900 NOS (OB) red lettering - damaged box
1 6AV5-GA $3.00 RCA 110% 4100 / 3900 used (ob) grid 'c' clip
1 6AV5-GA $3.00 RCA 110% 4200 / 3900 used (rb) silver lettering - grid 'c' clip
1 6AV5-GA $3.00 RCA 120% 4400 / 3900 used (ob) red lettering
1 6AV5-GT $2.00 Silvertone 100% 4200 / 3900 used (rb) grid 'c' clip
1 6AV5-GT $2.00 Tung-Sol 100% 3900 / 3900 used (OB) grid 'c' clip
1 6AV5-GT $2.00 GE 100% 3500 / 3900 used (rb) white lettering - grid 'c' clip
1 6AV5-GT $1.00 GE 90% 4100 / 3900 used (OB) white lettering - grid 'c' clip
1 6AV5-GT $1.00 Philco 90% 4200 / 3900 used (OB) grid 'c' clip
1 6AV5-GT $2.00 Philco 105% 4000 / 3900 used (L) grid 'c' clip
1 6AV5-GT $2.00 Raytheon 110% 4200 / 3900 used (L) grid 'c' clip
1 12AV5-GA $5.00 RCA 120% 4900 / 3900 NOS (OB) grid clip - red lettering
1 12AV5-GA $5.00 RCA 120% 4900 / 3900 NOS (OB) grid clip - red lettering
1 12AV5-GA $5.00 RCA 110% 4000 / 3900 NOS (OB) red lettering
1 12AV5-GA $5.00 RCA 110% 4500 / 3900 NOS (OB) red lettering
1 12AV5-GA $5.00 RCA 110% 4500 / 3900 NOS (OB) red lettering
1 12AV5-GA $5.00 RCA 110% 4500 / 3900 NOS (OB) red lettering
1 12AV5-GA $2.00 RCA 125% 5200 / 3900 used (rb) grid 'c' clip
1 12AV5-GA $2.00 RCA 120% 4500 / 3900 used (rb) grid 'c' clip - silver lettering
1 12AV5-GA $1.00 RCA 90% 4000 / 3900 used (OB) red lettering - grid clip
1 12AV5-GA $1.00 RCA 90% 3800 / 3900 used (OB) red lettering - grid clip
1 12AV5-GA $1.00 RCA 90% 4000 / 3900 used (rb) grid clip - red lettering
1 12AV5-GA $0.50 RCA 90% 4100 / 3900 used (rb) grid clip - red lettering - loose getter
1 25AV5-GA $4.00 RCA 120% 4800 / 3900 NOS (OB) red lettering
1 25AV5-GA $4.00 RCA 120% 4600 / 3900 NOS (OB) red lettering - grid 'c' clip
1 25AV5-GA $4.00 RCA 120% 4800 / 3900 NOS (OB) red lettering
1 25AV5-GA $4.00 RCA 120% 4600 / 3900 NOS (OB) red lettering - grid 'c' clip
1 25AV5-GA $4.00 RCA 130% 4500 / 3900 NOS (OB) red lettering - grid 'c' clip
1 25AV5-GA $4.00 Raytheon 110% 4400 / 3900 NOS (OB) grid 'c' clip
1 25AV5-GA $4.00 GE 110% 4200 / 3900 NOS (OB) white lettering - grid 'c' clip
1 25AV5-GA $4.00 GE 120% 4800 / 3900 NOS (OB) white lettering
1 25AV5-GA $4.00 GE 120% 5000 / 3900 NOS (OB) white lettering
1 25AV5-GA $4.00 GE 120% 4800 / 3900 NOS (OB) white lettering
1 25AV5-GA $4.00 GE 120% 5000 / 3900 NOS (OB) white lettering
1 25AV5-GA $4.00 Sylvania 110% 4400 / 3900 NOS (OB) yellow lettering - grid 'c' clip
1 25AV5-GA $4.00 Admiral 100% 4200 / 3900 NOS (OB) grid 'c' clip
1 25AV5-GA $2.00 RCA 100% 4200 / 3900 used leaky (5M) (OB) silver lettering - grid 'c' clip
1 25AV5-GT $2.00 GE 110% 4200 / 3900 NOS (OB) white lettering - grid 'c' clip
1 25AV5-GT $2.00 GE 110% 4300 / 3900 NOS (OB) white lettering - grid 'c' clip
1 25AV5-GT $2.00 Sylvania 110% 4800 / 3900 NOS (OB) yellow lettering - grid 'c' clip
1 25AV5-GT $2.00 Sylvania 110% 4300 / 3900 NOS (OB) yellow lettering - grid 'c' clip
1 25AV5-GT $2.00 CBS / Hytron 100% 4300 / 3900 NOS (OB) grid 'c' clip
1 25AV5-GT $2.00 CBS / Hytron 110% 4300 / 3900 NOS (OB) grid 'c' clip
1 25AV5-GT $2.00 Raytheon 110% 4500 / 3900 NOS (OB) grid 'c' clip
1 25AV5-GT $2.00 Raytheon 110% 4700 / 3900 NOS (OB) grid 'c' clip
1 25AV5-GT $2.00 Hytron 110% 4200 / 3900 NOS (OB) gray coat - grid 'c' clip - damaged box
1 25AV5-GT $1.00 CBS / Hytron 110% 4600 / 3900 used (rb) grid 'c' clip - gray coat
1 25AV5-GT $1.00 Sylvania 105% 4700 / 3900 used (rb) grid 'c' clip
1 25AV5-GT $0.50 CBS 90% 4400 / 3900 used (wb) grid 'c' 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.

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