Roland Go:Mixer Pro-X, Audio mixer and audio interface for smartphones and computers., 11 Inputs for instruments, microphones, keyboards and other devices, Microphone input (XLR/TRS combo jack) with switchable +48V phantom power, 2 Mono instrument inputs:6.3mm jack, 2 Stereo line inputs: 3.5 mm jack, Instrument input for guitar/bass: 6.3 mm jack, Smartphone input/output: 3.5 mm TRRS jack, CTIA, Stereo headset connection: 3.5 mm TRRS jack, CTIA, USB Micro-B port for power supply and connection to smartphone or PC, Loopback function for playing to backing tracks, Compatible with iOS and Android, Power supply via USB or 4 AAA batteries, Dimensions (W x D x H): 104 x 155 x 41 mm, Weight: 215 g, Includes Lightning < > USB Micro-B and USB-C < > USB Micro-B cable and 3.5 mm TRRS audio cable