I also own the Sony SA-RS5’s which are nearly double the size compared to the RS8’s. Pleasantly surprised, more sound volume produced with comparable ATMOS rear channel audio. One notable observation, the RS8’s are more directional based on their design, lacking the passive drivers and up-firing element of the RS5. No perceivable loss of fidelity, if anything, the directionality enhances the rear ATMOS effects when aimed correctly. Smaller footprint, less conspicuous but with a big sound. Highly recommended alternative if you don’t need an internal battery, which many do not need.