Apogee Quartet is the ultimate desktop audio interface and studio control center for professional recording on Mac and iPad. Made for the musician, producer and engineer that wants the ultimate sound quality and studio control in a compact desktop form factor, Quartet features legendary Apogee AD/DA conversion, 4 world-class microphone preamps, USB MIDI I/O, ESS Sabre32 DAC technology and monitor controls. When you buy and register your Apogee Quartet, you have access to incredible prices on any Waves audio plugins you want. Registered Apogee Quartet customers will receive a discount code good for 25% off a single plugin or 35% off any Waves bundle plus an additional $100 voucher* that can be used towards their next Waves plugin purchase. Take advantage of Quartet's low latency USB connection and powerful native Mac processing to join the ranks of top engineers and producers who count on Waves and Apogee to deliver hit after hit. With Quartet's 4 Combo inputs you can connect microphones, guitars, keyboards or line level devices such as external mic preamps or a mixing board. Expand your system with 8 additional inputs via Quartets optical (ADAT/SMUX) digital IN. Quartet also includes 8 analog outputs - 6-1/4 inch. balanced outputs for connection to speakers or outboard equipment and a separate, independently controlled 1/4 inch. stereo headphone output. You can control up to 3 pairs of speakers or set Quartet up for 5.1 surround monitoring.