Presonus AudioBox iTwo Studio with HD7 Headphones, M7 Mic, S1 Artist, Eris E4.5 Monitors, Pop Filter, and Mic Stand Bus-powered USB 2.0/iPad audio interface 24-bit resolution; 44.1, 48, 88.2, and 96 kHz sampling rate Compatible with almost all recording software for Mac, Windows, and iPad 2 microphone inputs with low-noise, high-headroom, Class A mic preamplifiers and +48V 2 switchable line/instrument inputs