Hi @UK2K50,
Welcome to the Roku Community and thanks for reaching out!
Yes, you can connect both your ONN Roku subwoofer and ONN Roku surround speakers to your Roku soundbar.
Remember that your Roku subwoofer and surround speakers are designed to connect with a Roku audio host device such as a Roku Streambar® SE, Roku Streambar, Roku Streambar Pro, Roku Smart Soundbar, or Roku TV™ system. With this in mind, you can be assured that by pairing these devices, you will experience the highest level of audio quality that Roku has to offer. Please note that the Roku subwoofer and surround speakers cannot be connected directly to any other TV or existing sound system.
For more information, you can visit our support page here on how to get started in settings up your surround sound system.
If there's anything else we can do to further assist, feel free to get back here in the Roku Community.
Regards,
Rey
ERey.
Roku Community Moderator
