Amazon.com: Subwoofer Amplifier Board, Arylic WiFi & Bluetooth 5.0,50W2 Stereo Pair + 100W Sub Class D Stereo Amplifier,Multiroom/multizone Home Audio Amplifier Board for DIY Speaker-Up2stream Amp 2.1 : Electronics
Amazon.com: Roku Wireless Subwoofer (for Roku Streambars or Roku TV) : Electronics
Sub: The World's Best Wireless Subwoofer For Home | Sonos
Sonos Sub Mini Dual 6" Wifi Subwoofer White SUBM1US1 - Best Buy
Wireless Karaoke Machine, Portable PA System Bluetooth Speaker with 8'' Subwoofer, Wireless for Home Karaoke, Party, Meeting, Outdoor/Indoor Activities - Walmart.com
TCL Alto 5+ 2.1 Channel Home Theater Sound Bar with Wireless Subwoofer, Bluetooth 5.1 – S522W, 31.8-inch, Black | TCL USA
Denon's Home Subwoofer lets you create a wireless 5.1 surround sound system | Engadget