Focusrite Product OverviewFocusrite Scarlett 18i20 is the perfect rack-mountable centrepiece to your studio. With a total of 18 inputs and 20 outputs, record anything from a drum kit to multiple instruments, vocals, synths and keyboards. Eight natural-sounding combination input Scarlett mic preamps, roundtrip latency of 2.74ms* and class-leading sound quality and digital conversion are complemented by a host of additional inputs and outputs. An ADAT input allows you to expand your analogue inputs for larger recording sessions. Focusrite is the perfect partner for Pro Tools. To that end, Focusrite and Avid will continue to work together to ensure all Scarlett interfaces are thoroughly tested with the latest version of Pro Tools. Scarlett 18i20 is also compatible with all other major DAWs, on Mac and PC.