maker hart just mixer s - 3 channel 3.5mm stereo input/output mini audio mixer battery/usb powered portable pocket audio mixer maker hart <p>features<p> <p>usb or battery power mode it can be powered by 5v / 1a usb or 1.5v battery (aaa). stereo 3 input / 2 output it can connect 3 audio inputs at the same time. each track has an independent volume adjustment knob, which can be output by headphones and speakers. ultra-small mixer easy to operate and easy to carry. simple yet practical trouble finding a pocket-size mixer? our mini audio mixer will bring you experience you have never felt before! if you have met our previous model just mixer, than you will definitely fall in love with the new mini audio mixer. combine with the best quality of previous model and the need for convenient way to mix sound at any place. though without the gain and balance control but we can sure the quality won’t decrease because of it. designed by professional sound equipment makers to fulfill a need that has yet to be met, the just mixer s by maker hart is a simple mixer without too many bells and whistles. however, it is perfect for those who need a reliable and affordable option to combine audio from up to 3 devices (smartphone, tablets, computers, mp3 players, amazon echo/dot, game consoles) and output to a single set of headphones or speaker. with 3.5mm input jacks, you can easily connect your devices with aux cables, and then adjust each input separately. powered by either batteries or micro usb cable, this portable mini mixer can be used just about anywhere, including while on the go and in the car. besides personal workstation use, the just mixer s can also be used by musicians, djs or audio technicians to monitor audio output, the just mixer s can free you from lugging around heavy equipment and can be used in most settings, be it a home recording studio, street venue, music club, or anywhere you'd like to perform or record. it is also ideal for combining different sound inputs in webcasting on facebook live, youtube, and other live streaming platforms.<p>