This easy-to-install module for the DALI SOUND HUB lets you enjoy DOLBY & DTS surround sound wirelessly. Now you can build a complete wireless surround system with DALI active wireless speakers. Add the HDMI expansion module to your SOUND HUB for HDMI ARC and eARC connectivity allowing you to stream surround sound wirelessly from your TV. Both Dolby and DTS formats are supported in configurations up to 7.1 channels.   Zero Loss volume control is handled at the end of the digital signal chain – in the speakers themselves. This ensures that volume adjustment does not result in data loss through truncation of the digital word length.   The total system latency is extremely low at under 15mS meaning that the signal delay from input to speaker is so low that you will experience no loss of lip-sync in audio-visual systems.