AIPHONE- intercom systems for business and industry, video entry systems for business
AKG ACOUSTICS- microphones
AMERICAN TIME AND SIGNAL- master and slave clocks
ALTINEX- room combining, conferencing
ANCHOR AUDIO- portable sound systems
ARMSTRONG - ceiling panel sound transducers
ATLAS/SOUNDOLIER- speakers, paging horns, stage accessories, microphones, paging systems, emergency, evacuation systems, mounting hardware
ASTATIC- microphones
ATS/APPLIED TECHNICAL SYSTEMS- time switches, master clocks, digital clocks, large display systems
AUDIO TECHNICA- microphones, wireless microphones, auto-mixers
BEST- ups
BIAMP- amplifiers, processing
BLONDER-TONGUE- cctv, catv, matv equipment, coaxial line amplifiers and distribution products
BOGEN- speakers, paging horns, stage accessories, microphones, paging systems, school intercommunication systems, master/secondary clocks
BOSE- commercial speaker systems, crossovers, processors
BRETFORD- tv mounts, stands, screens
BROADCAST VISION- local fm transmitters
CHANNEL VISION- cctv, catv, matv
CHIME MASTER- carillions
CLEARONE - intercoms
CLIFFORD OF VERMONT- wire
COMDIAL- analog and digital telephone systems
Convergentech -
CORNELL- intercoms, nurse call, area of rescue
CREST ELECTRONICS- cctv
CREST AUDIO- amplifiers, mixers
CROWN- microphones, amplifiers
DENON- cassettes, cd's, tuners
DISH NETWORK- satellite television
DOOR KING- access control intercom
DYNASOUND- architectural and audio security soundmasking products/services
EAW - loudspeaker systems
ELECTRO VOICE- loudspeakers, paging horns, amplifiers, telephone interface accessories
ETA - power conditioning
FAXBACK-  fax integration with email-unified messaging-IP-LAN/WAN
FIBER OPTIONS- fiber optic communications, fiber optic cable, interface products
FOURJAY INDUSTRIES- speakers, grills, mounting accessories
FRAZIER- state-of-the-art facility sound, commercial speaker systems, mountings
FSR- power sequencing, electronics
HM ELECTRONICS- wireless drive-thru systems, drive-thru timers
HOUSING DEVICES- area of rescue intercoms
INTER-M- amplifiers
JBL- speakers, horns, drivers
J-TECH- patron pagers, waiter's silent paging system, pocket paging systems
JVC- av monitors, vcr's
KDM- 180 degree speakers
LATHEM- master clocks, secondary clocks, tour-stations, time clocks
LOWELL- loudspeaker grills, baffles, mounting accessories
LISTENTECH - hearing impaired enhancement
LIGHTVIPER - fiber optic communications, fiber optic cable, interface products
MACKIE- mixers
MARANTZ - cassettes, cd's, tuners
MIDDLE ATLANTIC- audio equipment, racks, enclosures, shelves, etc
MYSTERY ELECTRONICS - power sequencing, electronics
MUZAK- over 75 formats of satellite and cd business music, on-hold messaging, in-store advertising

NELTECH- digital recorder/announcers, digital paging delays, in-store announcers
OMNIMOUNT- speaker mounting accessories
OWI- commercial mini-speakers, landscaping rock speakers
PANASONIC- wireless drive-thru systems
PASO- engineered systems, portable pa systems, power megaphones, sound lecterns, wireless sound systems, mobile sound systems, amplifiers
PEAVEY- amplifiers, mixer amps, power amps, loudspeakers, microphones, processors, mixers
PEERLESS - speaker mounting accessories
PELCO - av monitors, scr's, closed circuit video security products and systems
PHASE RESEARCH- drive-thru timers
PHILIPS- av monitors, vcr's, closed circuit video security products and systems
PHONIC EAR- public address enhancement equipment for the hearing impaired, tour guide systems
PREMIER- digital messaging
PROCO- connectors, patch-bays, patch-cords, interfaces, floor pockets, audio snakes
QSC AUDIO- amplifiers
QUAM-NICHOLS- loudspeakers, baffles, attenuators, and mounting accessories
RADIODESIGN- specialty electronics for problem solving - mixers, amplifiers, equalizers
RANE- signal processing
RAXXESS - audio equipment, racks, enclosures, shelves, etc.
ROCKUSTICS- weatherproof landscaping speakers
SAMSUNG- av monitors, vcr's
SAPLING- institutional clocks
SENNHEISER - microphones, wireless microphones, auto-mixes
SHURE- microphones for professional, commercial and general use, mixers and processors
SONY - pro audio
SOUNDSCAPE- exterior speakers
SOUNDSPHERE- spherical loudspeakers
SOUNDTUBE- 180 degree, decorative speakers
SOUND ADVANCE- coneless transducer "speaker" panels
SPECO- speakers
SPRINT- digital telephone systems, voicemail systems and wire management
STOR-COM- intercoms for industry, commercial, security, retail
SYMETRIX- digital audio processing equipment
3M- wired and wireless drive-thru systems
Tascam - cassette's, cd's, tuners
TEAC- cassettes, cd's, tuners
TeachLogic - public address enhancement equipment for the hearing impaired, tour guide systems
TSK- intercoms
TEKTONE- nurse call and intercom systems
TELEX- wireless microphones and intercoms, wired microphones, professional headsets, sports communications systems, ticket booth intercoms, high speed cassette duplication systems
TOA-- amplifiers, mixer amps, power amps, professional mixer consoles, loudspeakers, wireless microphone systems, microprocessor intercom systems
TRISYS- telephone call accounting systems
ULTIMATE SUPPORT- stage and equipment stands for microphones, lighting, speakers, keyboards
VALCOM- telephone and paging equipment
VIDEO MESSENGER- video overlay for on-premise messaging onto tv screens
WEST PENN WIRE- wire for audio and signal, fiber optic cable
WILLIAMS SOUND- hearing impaired enhancement