Ayan Enterprises - guitar effects.
Blackstone Appliances - overdrive pedals.
Boomerang Musical Products - phrase sampling device.
Collier Electronics - professional and personal equalization and amplification.
C-Tech - headphone amps, personal recorders and signal processors for guitar and bass.
Custom Audio Electronics - effects, pedalboards, audio switching and control systems and more.
DDyna Music Co - Effects Pedals.
dbx - digital and analog signal processors.
Demeter Amplification - tube preamps and processors.
Digital Music Corp. - featuring the Voodoo Lab range of guitar pedals: recreations of the most popular effects from the 60s and 70s.
DOD - effects pedals, multi-effects and dynamics processors, EQs, and more.
Dredge-Tone Audio - guitar and bass pedals, tube guitar amps and mic preamps.
Focusrite - professional analog signal processing equipment.
Frantone - guitar effects.
Jersey Girl - homemade effects for guitars and basses.
Morley - wah pedals.
Power Technology - manufacturers of the DSP-FX range of software effects processors.
Rane - large range of mic preamps, mixers and processors.
Real McCoy Custom - tunable wah pedals.
Sonic Engineering - surround sound panning and encoding plug-ins.
Sweet Sound Electronics - handmade guitar effects.
Techstar - US distributors for Palmer Audio Products, manufacturers of direct recording devices for guitar and bass.
U&I Software - sound design software.
Vibroworld - tube vibrato unit; also tubes and parts.
Visual Sound - guitar effects pedals.
Weiss - manufacturer of digital audio equipment for professional use.
Z.Vex Effects - guitar pedals handmade and attractively handpainted.
