However, the Quad is a 4.0.4-channel system, coming with two extra upfiring speakers, but lacking the dedicated subwoofer. When we tested the Sony Theater Quad here at TechRadar, we were impressed.

For comparison, the Sonos Arc has 11 speakers at different angles, including truly upfiring drivers for Atmos height, also to create a spatial surround-like system, so Sony's processing is doing a ...