DJi O is a compact, portable audio interface expressly designed for DJs, mobile music producers & other musicians who work with computers. Youll find DJi O to be a convenient missing link in your setup because it connects easily with a standard USB (Universal Serial Bus) cable to the computer & supplies extremely high-quality, 24-bit audio to output systems. DJi O has stereo outputs for a main sound system, a secondary or monitoring system & headphones, as well as a microphone input with a hardware volume control. The audio interface comes with premium ASIO drivers, which enable you to easily optimize your system’s audio performance. DJs & other performers employ DJi O in a wide variety of setups, most commonly involving music-mixing software & a hardware controller such as TOTAL CONTROL, STEALTH CONTROL, or Mix Meister Control. Other performers including CD DJs & non-musician computer users can also appreciate DJi O’s convenience & portability. You can use DJi O with Mac OS X, Windows XP, Vista & 7. Both 32 & 64-bit Windows are compatible. The USB (Universal Serial Bus) device is bus-powered so no additional power supply is needed. Optionally, you can wall-power DJi O with a six-volt AC adapter, which is sold separately. DJi O delivers extremely low-latency audio performance for real-time playback accuracy at a choice of CD-quality 44.1k Hz or premium 88.2k Hz sample rates. DJi O is compact & rugged enough to live in your gig bag. It has RCA stereo outputs & a headphone output so you can cue & output your main mix simultaneously. DJi O also has a 1/4" mic input so you can be the life of the party. 24-bit DAC Output Level: +2.0d BV +/-0.5d B SNR: > 100d B (A-weighted) THD+N: 0.008%