Four-channel computer audio recording interface Record up to 24-bit 48 k Hz audio into virtually any software Monitor sessions with balanced studio monitor & headphone outputs High-quality AD & DA converters discrete design preamps 48V phantom power Inputs for microphones line-level sources & instruments including guitars Tri-colour stereo level meter & lighted status indicators for visual monitoring MIDI Input & Output jacks for playing & controlling software with instruments The i O4 packs power & function into a compact package. No matter which recording software you like how many microphones & preamps you have or how large your library of plug-ins & VSTs you need a way to get audio into your computer.br The i O4 is a compact audio-recording interface for home project & portable studio recording setups. This four-channel USB (Universal Serial Bus) device for Mac & PC-based systems enables users to record & monitor up to eight channels of audio four in & four out in 16-bit mode or four channels two in two out in 24-bit mode. The i O4 is compact to comfortably fit into a mobile recording rig laptop bag or backpack yet contains high-quality components & circuitry suitable for the studio.br The i O4 has four input channels each having an XLR microphone input a 14-inch TRS insert for external effects units & a 14-inch TS jack that works with line-level sources & can accommodate direct connection of guitars. The i O4 features discrete-design preamplifiers & 48-volt phantom power on each of its four input channels as well for use with virtually all microphones & audio sources. br Producers & musicians will appreciate the ability to connect a second pair of reference monitors or route audio to external effects processorsbrusing i O4s four available output channels. For remote tracking & alternative playback the i O4 has a 14-inch TRS headphone output.br High quality analogue-to-digital & digital-to-analogue converters ensure that every detail of each session or performance gets captured & played back faithfully. The i O4 features MIDI In & Out jacks for playing & controlling software with keyboard & pad controllers workstations & other MIDI-compatible instruments.br The i O4 sends & receives eight audio channels on a single USB (Universal Serial Bus) cable for simple universal interface to a computer. The USB (Universal Serial Bus) interface is class compliantbrfor plug-&-play operation with Mac OS X & Windows XP Vista & 7.br The i O4 comes complete with a copy of Steinberg Cubase LE digital audio workstation DAW software. Cubase is one of the most popular DAWs in the world thanks to its intuitive approach to composing recording editing & mixing. In addition to the included software the i O4 is compatible with virtually all audio & MIDI software. br Record any time & any place with the Alesis i O4.