Speech intelligibility enhancer.
The MFJ-616 is a powerful communications tool that provides electronically enhanced audio to increase speech intelligibility. It features two monolithic 2.5 watt IC amps to drive hi-fidelity speakers (speakers are not provided). There is also a 1/4 inch stereo headphone jack on the front panel. Front panel knobs include: Volume, Balance, 300 Hz, 600 Hz, 1200 Hz and 2400 Hz. Front panel switches include: Bypass, Input A/B, Speaker On/Off and Power On/Off.
The back panel has and RCA phono jack for Input A and one for Input B. (The inputs are for line level audio). There are these outputs for speakers: Right Channel (mono mini), Left Channel (mono mini) and Stereo (stereo mini).
Eliminate hum, buzzes, poor frequency response, low power. Works with SSB, FM, AM, CW -- any voice mode. Use any rig -- ham, shortwave, marine, aircraft or CB. Use for PA systems, Internet phone, radio talk shows.
This item requires 12-15 VDC at 1.5 amps.