Great for at home recording:

Here's what UA says:

Built with a pair of Unison mic preamps, an onboard UAD-2 SOLO Core processor, and a full complement of built-in effects, the UAD-2 SOLO Core processor is a bus-powered behemoth that seeks to revolutionize home recording. Able to record at near-zero latency with readily-available studio effects like EQ, compression, and more, the powerful 24-bit/192 kHz audio conversion gets a formidable supporting cast of a built-in plugin bundle featuring the likes of Marshall Plexi and UA 610-B amp emulations. The power of a studio condensed into a portable, easy-to-use interface.

$400 plus shipping. Excellent condition with thunderbolt cable