Musical Concepts
- Makes and distributes hi-end audio components. USA.
- http://www.musicalconcepts.com/

Component Plus USA
- Makes components upgrades for tuners, digital audio and preamplifiers. USA.
- http://www.componentplususa.com/

Sonic Design
- Provides accessories and software for loudspeakers and loudspeaker design. Sweden.
- http://www.sonicdesign.se/

WeberVST
- Amplifiers and speakers parts, audio components. Provides guide, information, reviews and industry news.
- http://www.tedweber.com

Danish Sound Technology
- Manufacturer of Vifa, Peerless, Logic and Scan-Peek speaker components and sound panels.
- http://www.tymphany.com/

Able Audio
- Manufacturer of speaker rings, subwoofer enclosures, and templates. USA.
- http://www.able-audio.com

Tone Doctor
- Manufacturer of CabMojo and ComboMojo brands speaker switching products. USA.
- http://www.tone-doctor-llc.com/

PHY-HP
- Manufacturer of driver unit, cables and interconnect.
- http://www.phy-hp.com/

Ciare
- Manufacturer of drivers for home, cars, professional and electronics parts. Italy.
- http://www.ciare.com/

Raleigh Audio
- Manufacturers of vacuum tube kits for the DIY hobbyist to build a preamplifier or digital-to-analog converter with a line stage, DAC and power supply. USA.
- http://www.raleighaudio.com

Black Art Audio
- Designers and manufacturers of hand wound transformers for audio.
- http://www.jeack.com.au/~lucas/

NXT Sound
- British thin-screen speaker technology caused quite a stir when announced, lots of OEMs using it.
- http://www.nxtsound.com

Plitron
- Designs and manufactures standard and custom toroidal transformers.
- http://www.plitron.com/

NuWay Speaker
- Makes speakers components such as spiders, dust caps and speaker cones.
- http://www.nuway-speaker.com/

Honsound Electronics
- Manufacturer and exporter of woofer, boom box, tweeter, car speaker, multimedia speaker and other car accessories.
- http://www.honsound.com

High Frame Industrial Co.
- Manufacturer of loudspeaker components, including cones of various size and materials, grilles, caskets, and terminal cups.
- http://www.highframe.com/

E J Jordan Designs
- Manufacturers of drivers custom designed for hi-fi system manufacturers but also for sound reinforcement, broadcasting, defense, medical and telecommunication applications.
- http://www.ejjordan.co.uk/

Dahlquist Parts & Service
- Parts, service, & upgrades from "the Original Dahlquist" staff of New York.
- http://dahlquistspeakers.com/

Toroid International
- Design and manufacturing of toroidal transformers and chokes.
- http://www.toroid.se/

V-Cap Audiophile Capacitors
- Reference grade Teflon film and tin foil audio capacitors.
- http://www.v-cap.com

Danish Audio ConnecT
- Danish manufacturer of high end audio parts for hi-fi, and home theater. Products include stepped attenuators, balance controls, input switches, phono stages, RIAA preamplifier modules.
- http://www.dact.com/

Hakken
- Speaker parts from Taiwan.
- http://www.hakken.com.tw