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| Alesis | Sound |
| Allen & Heath | Sound |
| Altman Stage Lighting | Electric (Lighting) |
| Applied Electronics | Electric (Lighting) |
| Applied Research & Technology (ART) | Sound |
| Apogee Sound, Inc. | Sound |
| Apollo Custom Gobos | Electric (Lighting) |
| ARX Systems | Sound |
| Atlas Soundelier | Sound |
| AudioControl | Sound |
| Audio-Technica | Sound |
| Automatic Devices Company | Hardware |
| Avolites America, Inc. | Electric (Lighting) |
| BARCO Projection | Video |
| The Best Device Company | Electric (Lighting) |
| Bose | Sound |
| Bretford Manufacturing, Inc. | Video |
| BSS Audio Ltd. | Sound |
| Calzone Case Company | Hardware |
| City Theatrical,Inc. | Electric (Lighting) |
| ClearCom | Sound |
| Countryman Associates | Sound |
| Crest Audio | Sound |
| Christie Digital | Video |
| Crown International | Sound |
| Da-Lite Screen Company, Inc. | Video |
| dbx | Sound |
| Denon | Sound |
| Diversitronics, Inc. | Electric (Lighting) |
| DOD Electronics | Sound |
| Dove Systems | Electric (Lighting) |
| Draper Shade & Screen | Video |
| Drawmer | Sound |
| Eastern Acoustic Works, Inc. (EAW) | Sound |
| ECT, Inc. | Electric (Lighting) |
| Electrovoice | Sound |
| Electronic Theatre Controls (ETC) | Electric (Lighting) |
| ETA Lighting | Electric (Lighting) |
| Extron Electronics | Video |
| Flexlite, Inc. | Electric (Lighting) |
| Gold Line | Sound |
| Hafler | Sound |
| High End Systems | Electric (Lighting) |
| Hybrid Cases | Hardware |
| James Thomas Engineering, Inc. | Hardware |
| Jan-Al Innerprizes, Inc. | Hardware |
| JBL Professional | Sound |
| JR Clancy | Hardware |
| Klark-Teknik | Sound |
| Klipsch Professional | Sound |
| Knight Industries | Electric (Lighting) |
| Kryolan Professional Makeup | Misc. |
| Leprecon/CAE, Inc. | Electric (Lighting) |
| Lexicon Inc. | Sound |
| Lighting & Electronics | Electric (Lighting) |
| Littlite | Electric (Lighting) |
| Lowell Manufacturing Company | Hardware |
| LP Music Group | Sound |
| Marinco | Hardware |
| Meyer Sound | Sound |
| Middle Atlantic Products | Hardware |
| Motorola Spirit | Sound |
| NAMM | Misc. |
| Nady Wireless | Sound |
| Ness Lighting | Electric (Lighting) |
| New York State Theatre Education Association | Misc. |
| Omnimount Systems, Inc. | Sound |
| Otari Corporation | Sound |
| Oxmoor | Sound |
| Panasonic Broadcast & Television | Video |
| PLASA | Electric (Lighting) |
| ProAudio Web | Sound |
| Professional Audio Systems (PAS) | Sound |
| Pro Sound News | Misc. |
| Pro Sound Web | Misc. |
| QMI | Sound |
| QSC Audio Products, Inc. | Sound |
| Rane Corp. | Sound |
| Roland Corporation | Sound |
| Rolls Corporation | Sound |
| Rosco Laboratories, Inc. | Electric (Lighting) |
| Sennheiser | Sound |
| Sescom, Inc. | Sound |
| SFX | Electric (Lighting) |
| Shure Brothers | Sound |
| Sony Professional | Video |
| Soundcraft | Sound |
| Soundsphere Sonic Systems | Sound |
| Spirit | Sound |
| Stewart Electronics | Sound |
| Strand Lighting | Electric (Lighting) |
| Symetrix | Sound |
| Tannoy | Sound |
| TC Electronics | Sound |
| Technical Projects | Sound |
| Telex Communications, Inc. | Sound |
| TMB Associates | Electric (Lighting) |
| Tomcat USA, Inc. | Hardware |
| Total Fabrications | Hardware |
| Tripp Lite | Electric (Lighting) |
| Ultimate Support Systems | Hardware |
| Union Connector | Electric (Lighting) |
| UREI | Sound |
| Ushio America Inc. | Electric (Lighting) |
| USITT | Misc. |
| Vega | Sound |
| Wenger Corporation | Misc. |
| Wiese Manufacturing | Electric (Lighting) |
| Winsted | Hardware |
| Wireworks Corporation | Sound |
| Wybron, Inc. | Electric (Lighting) |
| XL Specialty Percussion Inc. Alesis | Hardware |
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