• API Audio Products, Inc.

• ARX Website

• Adamson Systems Engineering

• American Hi-Fi

• Audigo

• Audio Technologies Inc.

• AudioWorld Online

• Benchmark Media Systems, Inc.

• Blevins Audio Exchange

• Carvin - factory direct manufacturer of professional instruments and pro audio equipment.

• Cassiel: Music Styles and Systems

• Church Sound Journal - Blog written by a Church audio engineer

• Coffey Sound

• Crouse-Kimzey Company Professional Audio and Broadcast Equipment

• Crown International, Inc.

• dbx Professional Products

• Digital Designs

• DSP/FX effects processing system

• Earthworks Audio Products - measurement and recording microphones

• Eastern Acoustics Works

• Fermata Audio + Acoustics - acoustics consulting, and music production and engineering services

• Francis Manzella Design, Ltd. - acoustic consulting and studio design firm specializing in the design of critical listening environments and performance spaces.

• Full Compass Systems - Pro dealer

• Grandma's Music &Sound

• Haight Ashbury Music Center

• ICB Audio

• InterStudio Limited UK:Studio Equipment for sale

• JBL (Pro)

• Klipsch (Pro)

• LMC Audio Systems: The Home Of Pro-Audio

• Level Control Systems

• Live-Audio.com - discussion groups, related to the application of live audio for concerts and other like events

• Longmill

• Manley Labs

• Mediamagix Inc.

• MegaForce Technologies, Inc. - professional loudspeakers

• Meter Co., Ltd.

• Meyer Sound Laboratories, Inc.

• mm productions - performance sound - specialising in theatre based in the UK

• Outline Professional Audio - italian manufacturer of pro power amps, signal processors, disco mixers, high power loudspeaker systems

• PDA - Sound and lighting retail and production

• Parsons Audio

• Peavey Electronics

• Prefer Ummels BV - Dutch company, over 30 years experience, export to several countries.

• Pro Audio Equipment by CRL Systems

• Rane Corporation

• Renkus-Heinz - high end professional sound reinforcement loudspeakers, amplifiers, software programs

• RSP Technologies

• SAE Technology College

• Salmagundi Recording Studio - Northfield, MN

• SMART Devices, Inc.

• Sonic State

• Sound Room - US Sales for: Oktava mikes, Gamble DCX automated consoles, Frazier loudspeakers, studio, design & engineering

• SoundWave Professional Music Industry World Wide Web Site - audio production, mixing, engineering

• Speck Electronics

• Stage Accompany

• Stagetec Sound & Lighting Projects - design, supply, installation and maintenancefor the entertainment industry

• Stirling Audio

• Synergetic Audio Concepts - Sound Training Seminars

• TC Electronics

• The World Wide Pro Audio Directory

• Yorkville Sound