Check the listing for details. acpad Wireless Bluetooth Super Thin Guitar Controller MIDI Over Bluetooth. Condition: Open box. Listed at 299.00 USD. The acpad Wireless Bluetooth Super Thin Guitar Controller is a digital MIDI controller designed for musicians looking for a convenient and portable option for controlling their music software. The controller features wireless Bluetooth connectivity, allowing for easy pairing with your devices. Its super thin design makes it easy to attach and remove, providing a flexible and versatile option for on-the-go performances. The acpad brand is known for quality and innovation in the field of musical equipment, making this controller a reliable choice for any musician. When our son was a teen he purchased this brand new. He took it out of the box and messed with it for perhaps an hour or two, put it back in the box and that's where it's remained.