The iO4 packs power and function into a compact package. No matter which recording software you like, how many microphones and preamps you have, or how large your library of plug-ins and VSTs, you need a way to get audio into your computer. COMPACT CONNECTIVITY. The iO4 is a compact audio-recording interface for home, project and portable studio recording setups. This four-channel USB device for Mac and PC-based systems enables users to record and monitor up to eight channels of audio (four in and four out) in 16-bit mode or four channels (two in, two out) in 24-bit mode. PROFESSIONAL I/O. The iO4 has four input channels, each having an XLR microphone input, a 1/4-inch TRS insert for external effects units and a 1/4-inch TS jack that works with line-level sources and can accommodate direct connection of guitars. The iO4 features discrete-design preamplifiers and 48-volt phantom power on each of its four input channels as well for use with virtually all microphones and audio sources. F Specifications: INPUTS 4x XLR and 1/4", mic/line/guitar level Switchable phantom power Discrete-design preamplifiers OUTPUTS 2x 1/4" Main 1/4" TRS Headphone USB 4 In, 4 Out (max) RESOLUTION24-bit, 48 kHz (max) METERINGTricolor stereo LED tree CONTROLMIDI In, MIDI Out, USB Height: INPUTS 4x XLR and 1/4", mic/line/guitar level Switchable phantom power Discrete-design preamplifiers OUTPUTS 2x 1/4" Main 1/4" TRS Headphone USB 4 In, 4 Out (max) RESOLUTION24-bit, 48 kHz (max) METERINGTricolor stereo LED tree CONTROLMIDI In, MIDI Out, USB