The Focusrite Scarlett 18i20 is a USB 2.0 audio interface that comes with Pro Tools|First software. It features eight XLR inputs, but can be expanded to add more via an ADAT interface connected via an optical cable. It is compatible with any DAW, making it easy to set up and get recording. Most users found the sound quality to be exceptional, with some stating that it is feature-rich and easy to use. The large number of positive reviews suggests high levels of customer satisfaction. However, there were some issues with compatibility with certain computer software, and the instructions were not very user-friendly. The knobs were also found to be too small by some users.