BOYA BY-MP4 Overview
Key Features
2-Channels
Mono and Stereo Modes
3.5mm Mono and Stereo Inputs
3.5mm Stereo Output
Dual Trim Control Knobs
Includes TRRS Cable & TRS Cable
Passive Operation: Requires No Battery
Die-Cast Aluminum Chassis
 
Camera operators and sound recordists looking for a compact dual-channel audio adapter for their DSLR camera, smartphone or camcorder will appreciate the BOYA BY-MP4, an audio adapter that provides a compact dual-mic and audio mixing solution.

The adapter allows you to easily mount and control two microphones or wireless receivers. With its passive design, no power or batteries are needed. The die-cast aluminum chassis has three integrated mounting shoes to attach a variety of microphones, wireless receivers, and other accessories such as an LED light or monitor.
 
Designed for smartphone, DSLR camera, or camcorder
Mono and stereo modes
Two 3.5mm mono inputs and a 3.5mm stereo input
One 3.5mm output  (Select mono or stereo output mode)
Dual trim control knobs
Includes a 3.5mm TRRS cable and a 3.5mm TRS cable
Passive operation requires no batteries
Die-cast aluminum chassis
Attach a variety of mics or wireless receivers
Adjust the signal of each channel to the optimum recording levels
Includes a 3.5mm TRRS cable and a 3.5mm TRS cable