Features: [ Full-featured, high-quality, two-channel preamplifier and computer interface [ USB connectivity to desktop and laptop computers [ No additional drivers needed for Windows 98SE/ME/2000/XP/Vista or Mac OS 9.1/OSX computers with native USB support (USB 1.1 specification) [ Low-noise, fully balanced XLR/TRS combi inputs [ Up to 48 dB of clean gain [ Built-in low-noise phantom power supply [ Latency-free monitoring mix and level controls [ Independent channel gain controls [ 6.3-mm TRS balanced monitor and 3.5-mm headphone monitor outputs [ Compact, stackable all-aluminum chassis [ Flexible 3-way power from USB, external supply, or 9 Volt battery [ Dimensions (h x w d): 44.5 mm x 117 mm x 119 mm [ Weight: 0.59 kg