MDB Ventures

A new home for specialized collectors.

Rare, Vintage, Industrial, Ham, Radio and Audio vacuum tubes for sale.
We have over 100,000 collectible items for sale, and our inventory is growing daily.

Our master list of tested new and used vacuum tubes
Our list of non-cataloged (untested) vacuum tubes


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.

Yes, you're transaction is safe.
We only use Paypal or money orders sent via postal mail to insure the safety of your transaction.


Current Sales Promotion

It's fall! Time for falling prices! Getting bored staying indoors?
Time to get back into your hobbies and check out
Our Fall Sale Specials!

Buy one book, manual, record, radio part, computer part or bargain bin item and select up to two additional items of equal or lower value FREE!
THAT'S RIGHT! TWO MORE FOR FREE!!
(Note: Postage still applies to the additional items.)
(The second item does not have to be the same type of item.)
This sales promotion does not include our regular tube listings or equipment (testers, radios, amplifiers, etc).
--v-- Items on these pages are available for the discount --v--
Books --- Video, Magazines, Manuals and Documents --- Antique Records
Antique Radio Parts --- New/Used Computer, Parts and Software --- Rare Swag Items
Bargain Bin Packs --- Bargain Bin Items

Want to save more?
If your order totals $50.00 or more, there is no handling charge for the order (just regular postage).
If your order totals $100.00 or more, you get a 5% discount on your order (does not include postage).
If your order totals $200.00 or more, you get a 10% discount on your order (does not include postage).

This will be calculated automatically.
You don't need to do anything except place your order.
This promotion will continue only until MDB Ventures management decides to end it. So, order soon and get a significant discount on the items you need.
Click here for Additional Rules governing the use of MDB Ventures discounts

Closeout Specials

We have one tube caddy loaded with tubes left. We want to get rid of it to free up space.
So it is going for only $5 plus shipping (30 pounds).
Get this great deal before someone else does!
Tube Caddy

-- New! --

Science Fiction and Other Books - On Sale! -
See our current -- Sales Promotion -- above.

Antique Meters

Tube Testers and Amplifiers

-- Antique Records --

Car Radio Schematics and Service Manuals

Rare Swag

New/Used Computer, Parts and Software
---
-- Atari 520 ST Computer --


On a budget?

Check out our Bargain Bin Listings

Save on Discount Bargain Packs

Free! (broken tubes)

Large Quantity
Boxed and Loose
Tube Lots



Tube Listings


Vintage Preoctal and Globe/Balloon
---
Industrial, Ham Radio, Transmitter and Power Tubes
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Collector Tubes
---
Audio Tubes
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Radio and TV Tubes
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Miniature Radio Tubes
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"G" Style Radio Tubes
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Battery Radio Tubes
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Space Charge Low Voltage Tubes
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Loktal Radio Tubes
---
Compactron Tubes
---
Display Tubes,
Eye Tubes, Photocells, CRTs and Nixies

---
Nuvistor, Subminiature, Acorn and Rabbit Ear Tubes
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Delay Relays
---
Radio Ballast Tubes


Descrete Solid State Devices


Tube Testers
Used Electronics
(radios, amplifiers, etc.)

---
Antique Radio Parts
---
Unusual, Miscellaneous
and One-of-a-kind Items

---
Tube Caddy listings


Video, Magazines, Manuals and Documents
Books



Master Tube List
(all cataloged tubes - sorted list)

Non-Cataloged Tube List
(untested tubes - sorted list)



Our Library of Information
Electron / Vacuum Tube Information, Tube Testing Information and Lots of Other Useful (and not so useful) Information

About Our Vacuum Tubes

About MDB Ventures

Shipping Information

MDB Ventures Policies

Useful Links to Other Sources




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.



Links: eBay --- Google --- Yahoo ---
Bing --- Knight Software --- Backwater


Contact MDB Ventures
Portland Oregon USA
sales@mdbventures.com

Having trouble? Try
sales@fourwater.com
14 Jun 2020