Aprilsound
Audiophile audio transformers and accessories.
Audio Kit Mania
Distributor of tube and related products to design and build custom amplifiers and systems.
David Berning Company
Manufactures a series of vacuum tube audio amplifiers based on impedance converter that replaces the traditional audio-output transformer. Italy.
D.Klimo
Manufacturer of a variety of high end tubes. Germany.
Gabriel Sound Garage
Make a 18 watt tube guitar combo amplifier. Images, blueprints, tips & tricks.
Greenstone USA
Manufacturer and distributor of vacuum tubes and capacitors for audio, broadcast and military applications.
Hot Glass Audio
Repair, modification and restoration of vintage, vacuum tube audio equipment such as tube amplifier.
JJ Electronic
Manufacturers of tubes, capacitors for high-end audio amplifiers. Base in Slovak republic and Canada.
Machmat Tube
Information about tubes. Tube datasheets, schematics, code explanation, and sales.
MagneQuest
Makes tube audio transformers such as air-gapped and parallel feed single-ended transformers.
Maxi-Test Company
Digital tube testers for matching and testing power pentode vacuum tubes used in musical equipment amplifiers.
M.V.S.Z AO Svetlana
Manufacturers of high end electron tubes Svetlana 300B and Svetlana EL509-II.
PAEng Design
Devoted to vacuum tubes world applied to audio science. Consulting, design and engineering in audio. Power amplifiers and Hi-End products.
Studio M
Importer and distributor of resistors, capacitors and vacuum tubes. Italy.
THL
Supplier of audio parts and DIY kits. Taiwan.
Valvotronics
Manufacturer of high end tube audio electronics, including the Gain Ryder 3 compressor.
Variable Voltage Technology Ltd
Transformers power supplies and related equipment for audio equipment. Also EL inverters and magnetron transformers. UK.
Watford Valves
Suppliers of tested, graded and guaranteed valves to the professional music industry. UK.
Zeitmann tubes
Manufacturers of vacuum tubes such as NOS Tungsram audio tubes.
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