Best Bluetooth Pedal for Live Stage Performance The AirTurn BT500S Series combines the features and performance of the classic BT200 series. It is created with the look and feel of a traditional stompbox style pedal with optional 9v power supply, making it easy to add to your existing pedalboard. It is built with industrial-grade steel switches, and encased with a nearly indestructible polymer blend that doesn't interfere with the radio signal and still holds up to road wear. Along with the ability to customize computer keyboard and MIDI commands, it’s the perfect app controller for guitarists, bassists, keyboard players, DJ’s, recording engineers, and more!