The TRIO+ features a multi-function looper and band creator. - Model Name: TRIO+ - Brand: DigiTech - Included: Quick Start Guide, Power Adapter - Functions: Band Creator, Looper - Control Knobs: Volume, Tone, Bass, Loop This is a lot of fun to play with. For guitar, use the unit's send/return to run effects through to your amp. It's recommended to output the rhythm section from the mixer out and separate it from the guitar amp output. It sounds great even when plugged into the AUX input of a regular audio amp. If you boost the bass and volume to the limit without disturbing your neighbors, it almost feels like a studio. Purchased November 2022 Used indoors, only on a desk. Used once every few months. All switches are pressed by hand. I'm busy with work and can't use it much, so I hope it can be put to good use by a new owner. No operational issues. Includes the unit, power adapter, manual, warranty, and box. Detailed manuals are available online. There are also many how-to videos on YouTube.