Tone Plug Sound System Test Generator
By Distributed By MCM (TP1)
MCM Part #72-6564
The Tone Plug is a unique multi-function audio test instrument capable of generating a variety of signals for troubleshooting, analysis and calibration of sound systems and components.
Built into a male XLR microphone connector, the Tone Plug requires no batteries. Simply plug into a phantom powered microphone input of a mixer and its ready to go.