One mic or line/instrument channel, a headphone amp and two outputs, plus a built-in 76 compressor based on the legendary 1176. You get the sound and build quality you'd expect from a Universal Audio interface, and it's the only single-channel interface I know of with that level of sound and build that also comes with a compressor. Honestly, I find it a bit pricey overall for what it offers, but if you want the compressor built in, it's one of a kind.