ENG-44A professional 4 input stereo field mixer has more features than any other mixer near its price for field video productions with either DSLR or camcorders (improved version of Sign Video ENG44) Four transformer isolated XLR Inputs, each has mic/line switch, phantom power switch, low cut switch, and a channel assignment switch (left-center-right). Also auxiliary input, tape monitor input, mix buss input. Left & right XLR outputs switchable between mic/line plus separate line level and mic level 1/8(3.5mm) outputs. Headphone and boom operator outputs. Master gain control, slate microphone, tone oscillator, limiter, LED meter, tape return monitor. Powered by 4x AA cells (or ext 12v DC input), 14 hr battery life, removable strap ears, shoulder strap included. Made in USA; durable all aluminum cabinet, black anodized finish