Centrance MixerFace R4, Mobile and Compact Recording Interface, 2-Channel audio interface for PC, Mac and iOS and Android devices, Battery operation of up to 8 hours, High-quality digital converters with up to 32 bit/192 kHz resolution, 2x Ultra low-noise microphone preamps with 48V Phantom power and high-pass filter (XLR/TRS combo jack), Hi-Z instrument input per channel, Adjustable stereo aux input (3.5 mm jack), Balanced monitor output (2x 3.5 mm TRS jack), Headphone output (3.5 mm TRS jack), 2 Micro USB ports: 1 data transfer, 1 charging process, High-quality and robust aluminium housing, Dimensions: 121 x 70 x 36 mm, Weight: 260 g, Includes USB cable and carrying bag