Angela Instruments
- Offers a range of NOS tubes and parts.
- http://www.angela.com/catalog/tubes/Guitar_Tubes.html

Mach Mat
- Supplier of vacuum tubes and other electronic items
- http://www.machmat.com/

Western Electric
- Manufacturer and supplier of vacuum tubes
- http://www.westernelectric.com/

Audio Classics
- Supplier of vacuum tubes and audio/video equipment
- http://www.audioclassics.com/

The Tube Center
- Supplier of vacuum tubes, grid caps, and sockets for amplifiers.
- http://www.thetubecenter.com/

Upscale Audio
- Supplier of vacuum tubes and other audio items
- http://www.upscaleaudio.com/

KR Audio Products
- Supplier of vacuum tubes and amplifiers
- http://www.kraudioproducts.com/

The New Tube
- Supplier of vacuum tubes
- http://www.newtube.com/

ATSI Advantage Tube Services
- Supplier of vacuum tubes and other electronic items
- http://www.tubeman.com/

Triode Electronics Inc.
- Supplier of vacuum tubes and other electronic items
- http://www.triodeelectronics.com/

Doug's Tubes
- Supplier of vacuum tubes for guitar amplifiers and high end audio.
- http://www.dougstubes.com/

Langrex Supplies Ltd.
- UK supplier of vacuum tubes and other electronic components
- http://www.langrex.co.uk/

Eurotubes
- Supplier of JJ brand vacuum tubes and other audio items
- http://www.eurotubes.com/

Penta Laboratories
- Manufacturer and Distributor of electron tubes, vacuum tubes, capacitors, magnetrons and CRT for Broadcast, Industrial, Marine and Avionics.
- http://www.pentalaboratories.com/

D and C Electronics
- Distributor of electronic vacuum tubes, sockets and magnetrons
- http://www.dandcelectronics.com/

Radio Tube Supply
- Supplier of vacuum tubes, thermionic valves, and electron tubes
- http://www.radiotubesupply.com/

Ampwares
- Supplier of vacuum tubes and other tube amp parts
- http://www.ampwares.com/

Mesa Boogie
- Supplier of vacuum tubes and guitar amplifiers
- http://www.mesaboogie.com/

Tubes Ru
- Russian supplier of vacuum tubes
- http://www.tubes.ru/

AYDN Vacuum Tube Audio
- Supplier of tubes, sockets, amplifiers and Hi-Fi speakers
- http://www.aydn.com/

Electron Tubes for Industry
- Supplier of electron tubes, vacuum tube ,and test equipment.
- http://www.elexs.com/

Phamitech (China) -
- Supplier of vacuum tubes, electron tubes, sockets, and RF capacitors
- http://www.phamitech.com/

Parts Express
- Supplier of vacuum tubes and other electronic components
- http://www.parts-express.com/

Tube Depot
- Supplier of vacuum tubes and other electronic parts
- http://www.tubedepot.com/

Vacuum Tube Valley
- Supplier of vacuum tubes, audio equipment, and publisher of Vacuum Tube Valley magazine.
- http://www.vacuumtube.com/

Antique Electronic Supply
- Supplier of vacuum tubes, electron tubes, and other electronic items. Specializing in the antique radio restoration market.
- http://www.tubesandmore.com/

BRENT JESSEE RECORDING
- Vacuum Tube Sales and other audio supplies.
- http://www.audiotubes.com/

KCA NOS Tubes
- Audio tubes for guitar amplifiers and audiophile equipment.
- http://www.kcanostubes.com/

Tejas Tubes
- NOS Vacuum tubes and electron tubes dealer located in Houston Texas
- http://www.tejastubes.com

Electron Tubes
- Tubes for hi-Fi amateur radio and other applications.
- http://www.electrontubes.info/

BOI Audioworks
- Vacuum tubes and related components for hifi audio, guitar amplifiers and radio.
- http://www.boiaudioworks.com/

The Tube Store.
- Buy vacuum tubes online. New and NOS electron tubes. Mostly audio tubes.
- http://thetubestore.com/

Radio Electric Supply
- New and new old stock vacuum tubes for sale, plus a list of tubes they want to buy.
- http://www.vacuumtubes.net/

Watford Valves
- Suppliers of valves to the professional music industry.
- http://www.watfordvalves.com/

Valve & Tube Supplies
- Provides vintage radio valves and tubes.
- http://www.valves.uk.com/

Leeds Radio
- Brooklyn, New York source for rare and hard-to-find parts and tubes. Includes technical information and vintage advertisements.
- http://www.leedsradio.com

Fathauer Antique Vacuum Tubes
- Really old tubes, buy and sell.
- http://www.users.qwest.net/~tubes/

The Tube Shop
- Supplier of tubes primarily for audio, industrial and ham radio applications.
- http://www.thetubeshop.com

Vacuum Tubes Inc
- Sellers of vacuum tubes and electron tubes for audio, radio, and industry
- http://www.vacuumtubesinc.com/

STF Electronics
- Selling vacuum tubes, Hammond transformers, chassis, and capacitors. Online sales.
- http://www.stf-electronics.com/

SND Tube Sales
- Offers a variety of tube and testers.
- http://www.vacuumtubes.com/

TubesontheWeb.Com
- This site has computerized vacuum tube testers and tubes for sale.
- http://www.tubesontheweb.com

Crowthorne Tubes
- Crowthorne, Berkshire in England. Buying and selling valves, valve testers, components and test equipment.
- http://www.crowthornetubes.com/

Jim McShane Vacuum Tubes
- Seller of vacuum tubes for audio primarily.
- http://pages.prodigy.net/jimmcshane/

Play Things Of The Past
- Sales of vintage radio tubes.
- http://www.oldradioparts.com/

Tube World
- Vacuum Tubes For Sale.
- http://www.tubeworld.com/tubes.html

A. G. Tannenbaum
- Specializing in electronic service data, parts, tubes, old radios and TV sets. Online ordering.
- http://www.agtannenbaum.com/

RF Parts Company
- Online catalog includes transmitting and receiving tubes for sale.
- http://www.rfparts.com/

New Sensor Tubes
- Online Catalog of all their tubes for sale. Geared toward audio users, but sell some RF tubes too.
- http://www.turnstyle.com/nsc/catalog.asp

Mike's Old Vacuum Tubes
- Selling rare old NOS vacuum tubes - Valves For audio, radio, TV, DIY and parts - in Sweden.
- http://hem.fyristorg.com/movt/

Micronetics Tubes
- NOS or NIB tubes by the major brands of yesteryear.
- http://www.micronetics-trading.com/

Classic Valves
- Vacuum tube seller. Primarily for guitarists and audiophiles. Store is in Davie, Florida.
- http://www.audioweb.com/Store/Store.asp?storeid=62