Question about Erard Standit 600

I have hung a 65'' television on it. I mounted a sonos playbar underneath it with the corresponding wall bracket. However, I had to drill additional holes in the stand for this. The metal is quite thick, but it still worked quite well. Unfortunately, I can't tell you how the width of the stand will fit with your Sonos mount, but there are a few centimetres available for holes on the left and right (the cable guide is then in the middle of the back).