Avid Pro Tools Express with Mbox Mini Get best-in-class sound quality and performance with professional-grade circuitry and premium audio conversion 2 x 2 simultaneous channels of I/O; One XLR mic/line combo input with 48V phantom power; Two 1/4" instrument inputs; Two balanced 1/4" monitor outputs; One 1/4" stereo headphone output; Mix control for low-latency monitoring; Dedicated monitor volume knob Create music and sound for picture-with up to 16 audio tracks-using Pro Tools Express, featuring the core industry-standard tools used by top producers, engineers, and artists