Rocketfish RF-RBUSB Rocketboost Wireless Receiver/Transmitter Compatible with most audio devices: For wide-ranging use. Wireless operation: Obtains audio signals from a paired audio device and sends them to a different audio device wirelessly. Connects up to 8 rooms per receiver/transmitter. Up to 150' range: For crystal-clear sound. AC/DC Adapter, USB to Mini Cable, & 6.6' Stereo Audio Cable all included.