just mixer audio mixer - battery/usb powered portable pocket audio mixer w/ 3 stereo channels (3.5mm) plus on/off switch maker hart <b>simple yet practical</b><br>designed by professional sound equipment makers to fulfill a need that has yet to be met, the <b>just mixer</b> 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 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. to power the just mixer by using a usb power bank, we recommend the energyflux hef. other power banks may not work because the just mixer takes very little power and most usb power banks will shut off automatically<br><br>the just mixer can free you from lugging around heavy equipment and can be used in almost any setting, be it a home recording studio, street venue, music club, or anywhere you'd like to perform or record.<br><br>*the just mixer is designed to be more suited for use with non-premium headphones and sound systems.<br><br><b>controls and jacks</b><br> 3 x 3.5mm stereo input: 2 input jacks that can be split into 4 x 1/4" mono (mono to stereo adapter required), 1 aux in<br> 1 x 3.5mm stereo output: output to headphones or speakers<br> overload indicator: lights up when mixed signal level is too high<br> balance: adjust l/r balance for each channel<br> gain: adjust and amplify signal strength for each channel<br> master and channel volume sliders: adjust volume of overall and individual channels<br> usb power jack: micro usb socket (cable not included)<br> power switch / indicator<br><br><b>specifications</b><br>gain: max. 20db<br>power source: 2 x 1.5v (aaa) batteries or 5v micro usb power source<br>weight & dimensions: 3.2oz; 2.7 x 4.1 x 0.9"<br>package contents: just mixer, 2 x aaa batteries, pouch, manual