Hi @Ypioca, thank you for reaching us out and welcome to the Sonos Community. I appreciate you for providing us your concern. Let me help you with this.
Appreciate your interest in Sonos products too. Sonos Arc, Sonos Amp, and Sonos One work together when they are grouped in the Sonos app.
The Sonos Amp Amp works with traditional 8-ohm bookshelf speakers as well as pairs of 6 or 4-ohm speakers that you can connect via the banana plugs. You can check out this article about connecting four speakers to your Sonos Amp to guide you through.
The Sonos Amp can be added as surround with the Sonos Arc to create a home theater setup. An Amp supports Trueplay when using Sonos In-wall or In-Ceiling by Sonance Architectural speakers with the Amp. It is not available for the Sonos Outdoor by Sonance Architectural speakers. An Amp also supports Trueplay when powering Sonos rear channels in a home theater setup.
You can remove the Amp as surround from the home theater setup to play TV with the Arc and play music with the Amp at the same time. Set back the Amp as a surround to return to the home theater setup.
We can wait for suggestions and feedback from our Sonos community members, they might provide their own opinion about this. You may also contact our Sales specialist to know more about it.
Hope this helps.
If you need help with any other information, please be sure to let us know.
We're here to answer any further questions you have.