The Focusrite Scarlett Solo 2nd Gen is a 2-in/2-out USB audio interface designed for solo artists and singer-songwriters. It offers 24-bit/192kHz audio resolution and features a microphone input with phantom power, a switchable line/instrument input for guitars, and a headphone output. This interface is praised for its solid build quality, ease of use, and portability, making it suitable for both home studios and on-the-go recording. It's also class-compliant for Mac users, meaning no drivers are needed for basic functionality.