In addition to the two mic/line/instrument inputs, the interface offers an optical port for digital input expansion (via ADAT or S/PDIF) and MIDI I/O for integration of MIDI equipment such as a keyboard or drum machine. Four line-level outputs and a stereo headphone out let you properly hook up monitors, headphones, and more. The Clarett+ 2Pre includes a software package featuring Focusrite Red plug-ins and a channel strip that accurately models the rare Focusrite Studio Console. Also provided is the Focusrite Control software that enables you to configure routing and monitor mixes from Mac and Windows computers, or iPad, iPhone, and iPod touch mobile devices.