I am a huge audiobuff and a big movie lover so if always push for surround sound. I have always rocked a five. One set up for my home theater system. As a fully blind person this is the issue I’m having now. Most of the time when there are scenes with sound effects and such that is when all the audio descriptions kick in and is the process the sound effects and such so you don’t really hear him terribly well. It’s not the end of the world but I had to change the way I watched movies in order to accommodate my blindness and surroundsound just kind of just isn’t that important to me anymore.

I bring this up because what is it that you were going to play through your surroundsound set up? Is it gonna be music or TV shows or movies or gaming or is it gonna be a little bit of everything?

I mention all this because you’re almost better off going with a stereo receiver that’s accessible to you but still would make a great set up instead of spending money on surroundsound if half the scenes are going to be suppressed due to the audio descriptions.

As far as accessible receivers go I don’t have experience with them so somebody else should be able to chime in here. But on my system once my receiver is set up all I have to do is hit the power button turn the dial to the source and then the volume button and that’s it I don’t have to Fiddle with anything besides the source and the volume.

Hi,
before I start, you should know, that a high quality surround system will cost some money. Depending on what you want, it will be a lot of money. And you will need sighted help setting it up. Especially, because someone will have to attach the speakers to your walls.
Regarding upgrading your Sonos system, well, again, it depends on what you need. I recently bought the Dennon avc-6700H entertainment system, since Sonos just didn't have what I wanted. As far as I know, Sonos does not have actual surround systems. I think, they have a soundbar, which can simulate surround sound. However, that wasn't an option for me, since this thing only has one HDMI-Port. Plus, I prefer true surround sound. And with my current system, I also have the possibility of upgrading it to an 11.1-system, if I ever want to.
Now, regarding accessibility, you might want to go with something, that has a webinterface or an app for your phone. The Dennon app is accessible enough to do things. For me, it needed some tinkering, but it kind of works. I mean, things could be better, but it could also be much, much worse.
In the end, it comes down to what you want, how many devices you need to connect, how much money you want to spend etc. For me, my current system is a very good long-term solution. But I also know, that this is not for everyone...