The 16x8 24-Bit USB Audio Interface from ESI is a USB 2.0 Hi-Speed audio interface that features 16 input channels and 8 output channels. It is equipped with four integrated microphone-preamp/XLR inputs on the front with switchable 48V phantom power, two Hi-Z instrument inputs for electric guitars, as well as coaxial digital S/PDIF input and output. It is also equipped with two independent headphone outputs on the front, next to an integrated monitoring mixer. You can connect external keyboards, synthesizers, and sound modules via the MIDI input and output on the backside of the unit. Based on EWDM and DirectWIRE technology, low latency drivers support WDM, ASIO 2.0, and CoreAudio technology for both Mac and Windows.