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