This USB audio interface with mixer functionality combines a mic, instrument and line source with a computer audio signal and feeds the mix to your computer via USB. The US-125M provides up to 16 bit/48 KHz audio resolution and features four inputs with dedicated level controls: a mic input (balanced XLR/TRS on rear or unbalanced mini jack on front) with switchable limiter and Signal/Overload indicator, guitar input (standard phone jack), stereo line input (RCA), and a Stereo audio input from computer via USB. This USB-powered device is housed in an aluminum case, and can also be used as a simple stand-alone mixer.