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TUBE AUDIO SITES.
GRIFFON VALVE PAGES http://members.tripod.co.uk/griffonconsulting
Lots of information on transformer coupling and distributed load including details of the Quad "Acoustical" design.
DUNCAN AMPS http://www.duncanamps.com/
Mostly guitar related. Creator of SPICE tube models used in MCap. Some software downloads including power supply designer. Tube data search engine.
NATIONAL VALVE MUSEUM http://www.valve-museum.org/
British virtual museum with cross-referenced search facility between equivalent military and domestic types. Also the rebuilt computer at Bletchley park used in WW2 to crack ENIGMA codes.
KENNEDY AUDIO http://members.bellatlantic.net/~vze2w7wc/
Acclaimed tube guru Kevin Kennedy's audio pages.
KIEWA VALLEY STEREO http://home.mira.net/~kiewavly/stereo.html
Australian stereo photography and tube audio site hosted by Steven Spicer, author of "Firsts in High Fidelity" a history of the Leak company. The site includes details of many of Steve's own designs.
NICK SHELDON'S SITE www.bigvalveamplifiers.co.uk
Huge SE amplifiers using transmitting tubes.
THE INVENTOR OF STEREO http://www.doramusic.com/
A site dealing with the life and works of prolific British inventor, Alan Blumlein. His work has remained in obscurity until recently due to Churchill, who ordered that all his work be treated as secret after Blumlein and his team lost their lives during an experimental flight on a Halifax bomber which crashed while testing the H2S radar system.
STEVE'S TUBE PAGES http://members.aol.com/sbench101/
Steve is a prolific experimenter. This page has lots of theoretical background and an amazing range of innovative designs including his "No R No C" concepts.
WORLD TUBE AUDIO PORTAL www.worldtubeaudio.com
An extremely comprehensive resource for searching for OEM, DIY, suppliers and almost any other information that you may desire.
AUDIO DAC PAGE http://members.chello.nl/~m.heijligers/DAChtml/dactop.htm
Present a DAC design by a group of enthusiasts. 4 layer boards available (I think subject to sufficient orders). Well worth checking out.
British manufacturer of a very wide range of output and interstage transformers. Also an excellent range of small signal transformers with mu-metal cores. Custom power transformers. Terrific electrical and sonic performance for the money.
Italian manufacturer of double C core audio output and interstage transformers. Top sonic performers. Also Chokes and custom power transformers.
Swedish manufacturer of excellent sounding 'C' core output and interstage audio transformers. Also power transformers and chokes
Kevin Deal provides a first class tube matching service to your specific requirements if desired including low microphony tubes for pre-amps.
JIM McSHANE http://pages.prodigy.net/jimmcshane
ANGELA INSTRUMENTS http://www.angela.com/catalog.html
Tubes, Magnaquest transformers, premium parts.
MICHAEL PERCY AUDIO www.percyaudio.com
Michael maintains a terrific inventory or premium components, also hardware accessories and damping materials. His catalogue can be downloaded (PDF) from the URL or e-mail him at email@example.com
ANTIQUE ELECTRONICS http://tubesandmore.com
New, NOS and used tubes, tube sockets, books, Hammond transformers, boxes, chassis , hard to find parts for antique radios, carbon composition resistors, speakers, cloth covered wire, Litz wire, One-Electron transformers, big and varied range of caps.
TRIODE ELECTRONICS www.triodeelectronics.com/
Uncle Ned's friendly tube store, big range of tubes and parts. Also schematics and a wealth of general information and well documented links.
VACUUM TUBE VALLEY www.vacuumtube.com
Home of VTV magazine. Also parts for HiFi and guitar including premium polypropylene and paper caps, kits for re-building or upgrading classic amps, tubes.
AUDIO ASYLUM www.audioasylum.com
A moderated discussion forum for things tubular and audio.
BOTTLEHEAD FORUM www.audioasylum.com/forums/bottlehead/bbs.html
Known as the 'joelist', a bulletin board for detailed questions and information on all things tube audio related. Good for research.