The Scarlett 18i20 offers extensive I/O options to handle a wide range of recording scenarios. It includes eight analog inputs, two high-impedance instrument inputs, and digital ADAT and S/PDIF I/O, allowing for up to 18 inputs and 20 outputs in total. Use the analog connections to patch in microphones, instruments, keyboards, or drum machines, and expand your setup with ADAT for additional preamps or converters. The built-in MIDI I/O lets you connect synths and controllers, while word clock I/O ensures precise synchronization with other digital devices.