Hello,
Yes, there is a sound bar position under the TV.
Dimensions of TV with stand (sound bar position) (W x H x D): approx. 144.8 x 90.4 x 32.7 cm
Sony Support EN

Yes, my Bose soundbar fits perfectly.
However, the TV must be raised with the feet

I don't think so, depending on how long and wide the soundbar is.
You can adjust the feet... Maybe a soundbar from Sony would fit (?).

Depending on how you attach the feet, yes :)