Saramonic's SmartRig + 2-channel XLR microphone audio mixer is a portable microphone/guitar interface for recording professional quality audio. SmartRig + makes your recording job easier by connecting professional microphones and guitars (or other instruments) to your smartphone, tablet, digital SLR camera, or video camera. With two independent channels, you can connect and control gain across multiple microphones or guitars at the same time. The interface also features three types of inputs to accommodate any configuration: two XLR / 1/4" combo inputs and two XLR / 1/4" combo inputs and three types of inputs to accommodate any configuration: two XLR / 1/4" inputs and two combo inputs and two XLR / 4" inputs.