The unit has two cables: one for power and the other for the HDMI connection to your TV, which can transmit up to 1080p video and audio.

ENGADGET: AllShare Cast wireless streaming dongle for Samsung Galaxy S III -- hands-on (video)

This enables the HDVD 800 to transmit the entire frequency spectrum of high-end audio sources without any loss of frequencies.

ENGADGET: Sennheiser unveils HDVA 600 analog headphone amp, asks for $1,600