The compact BOSS BTDUAL Bluetooth audio MIDI dual adapter brings Bluetooth audio and MIDI capabilities to the CUBE Street II battery-powered stereo amplifier. Once installed, you can pair with a Bluetooth device, such as smartphone or tablet, and communicate wirelessly with the CUBE amp. The actual wireless functionality that’s available depends on the specific product model, but it may include music streaming with Bluetooth audio, controlling various product functions with Bluetooth MIDI, and more.