TOA T-02S Line Input Module for Music-On-Hold - Unbalanced 220K ohm InputThe T 02S from TOA Electronics is an input module that accepts unbalanced, line level signals. It also has transformer isolated output for feeding mixers, amps, recorders, and music on hold systems. It has input and output gain adjustment controls and features five screw terminal connectors. This module is for use with modular devices from TOA Electronics.