https://www.cnet.com/news/sony-outs-two-dumb-sound-bars-for-2019/

Connectivity includes HDMI eARC support for compatible televisions such as the 2019 Sony range in addition to Bluetooth.

The new HT-S350 sound bar includes a wireless subwoofer and a claimed 320 watts of power. Unlike competitors which now use DTS Virtual:X, the HT-S350 uses Sony's proprietary S-Force Pro Front Surround technology. The sound bar uses the existing HDMI ARC connection and also carries Bluetooth.