With specially engineered effects, a built-in looper, and drum machine, the Zoom A1X FOUR is the first Multi-Effects Processor designed for a variety of acoustic string and wind instruments -- acoustic guitar, saxophone, trumpet, violin, harmonica, acoustic bass, and more! The A1X FOUR adds an expression pedal, putting additional control at your feet. Comes with The Zoom MAA-1 mic adapter provides a hassle-free connection to the A1/A1X FOUR. It works with dynamic microphones and even provides phantom power for condenser mics. Add effects to any acoustic instrument and adjust gain settings with the MAA-1’s easy-access controls. I have the hard case for it for an extra $10.