Boss BT-Dual Bluetooth Audio MIDI Dual Adaptor; Brings Bluetooth wireless capabilities to compatible products; extends the possibilities of the CUBE Street II; Connect your smartphone or tablet wirelessly to the amp and jam live to backing tracks or play background music between sets; connection to CUBE Street II Editor possible; the free app provides access to advanced features such as effects editing, monitoring battery status, creating live sets; Supports Bluetooth audio and Bluetooth MIDI (BLE-MIDI) communication standards; Quick and easy installation; Power supplied from the host product