AUDIO ONLINE™ - INTERACTIVE TELEPHONE INFORMATION SYSTEM  
View Audio Online Manual

MATCHBOX™ - BI-DIRECTIONAL STEREO LEVEL & IMPEDANCE INTERFACE

TWINMATCH™ - DUAL STEREO LEVEL & IMPEDANCE INTERFACE

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

MICROMIXER™ - FOUR-INPUT STEREO MIXER

MIXMINUS PLUS™ - MIX-MINUS DIFFERENTIAL AMPLIFIER

DIGIMATCH 2x6 - DIGITAL MESSAGE STORAGE SYSTEM 

DIGISTOR-MP™ - DIGITAL MESSAGE STORAGE SYSTEM 

SUPERELAY™ - UTILITY CONTROL INTERFACE

STEREOSWITCH™ - 3-INPUT STEREO AUDIO SWITCHER

LOGICONVERTER™ - UTILITY CONTROL CONVERTER INTERFACE

STEREOMIXER™ - EIGHT INPUT STEREO MIXER

MONISWITCH™ - STEREO AUDIO SWITCHER

PATCHBOX™ - STEREO OUTPUT MULTIPLIER 
View Patchbox Schematic here

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TEL (626) 355-3656
E-MAIL: Info@henryeng.com