Yes, wireless surround sound systems use some wires, although the number and type of wires required may vary depending on your specific system.

Firstly, the primary audio source, such as a receiver or soundbar, must still be connected to the TV or other input device via a wired connection such as HDMI or optical cable.

Secondly, most wireless surround sound systems require plug-in power cords for every speaker. While the speakers don’t have to be wired together, they must still be plugged into a power outlet.

Some wireless surround sound systems may also include wireless subwoofers, which still need to be plugged into a power outlet. In some cases, these subwoofers may also have a wireless connection to the primary audio source, while in other cases, they may require a wired connection.