AUDIO ONLINEú - INTERACTIVE TELEPHONE INFORMATION SYSTEM  
View Audio Online Manual

MATCHBOXú - BI-DIRECTIONAL STEREO LEVEL & IMPEDANCE INTERFACE

TWINMATCHú - DUAL STEREO LEVEL & IMPEDANCE INTERFACE

U.S.D.A.ú - UTILITY SUMMING & DISTRIBUTION AMPLIFIER

MICROMIXERú - FOUR-INPUT STEREO MIXER

MIXMINUS PLUSú - MIX-MINUS DIFFERENTIAL AMPLIFIER

DIGIMATCH 2x6 - DIGITAL MESSAGE STORAGE SYSTEM 

DIGISTOR-MPú - DIGITAL MESSAGE STORAGE SYSTEM 

SUPERELAYú - UTILITY CONTROL INTERFACE

STEREOSWITCHú - 3-INPUT STEREO AUDIO SWITCHER

LOGICONVERTERú - UTILITY CONTROL CONVERTER INTERFACE

STEREOMIXERú - EIGHT INPUT STEREO MIXER

MONISWITCHú - STEREO AUDIO SWITCHER

PATCHBOXú - STEREO OUTPUT MULTIPLIER 
View Patchbox Schematic here

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