Sonifex DHY03 Digital Telephone Balance Unit

This digital version of the industry standard HY-03 uses Digital Signal Processing to give much enhanced performance over the more established types, for use where the best quality telephone interfacing is required, typically in broadcast phone-in and news/sport applications.

The send and receive paths are transformer balanced and isolated, and connect to the other equipment via XLR style connectors, with input and output gain controls for ±6dB adjustment. Independent LED bargraph metering of send and receive levels aids set-up, the illuminating “connect” or “divert” switch has remote control facilities, and K-break, reverse polarity and dial tone disconnect functions are provided for the phone line, which connects via and RJ11 socket for the line and for the telephone handset.