The BRAVIA Theatre Quad replaces Sony’s HT-A9 speaker system, first introduced in 2021 ... The Quad speakers can be wall-mounted using the included mounting brackets or they can be placed on speaker ...

The HT-A9 is made up of four wireless speakers and a central control box that features HDMI 2.1 input and output as well as ethernet and USB connections. The four speakers use Sony’s Spatial ...