I had a client call and say his soundbar stopped working. At the service call I could hear his soundbar in the parking lot of his apartment building. The sound bar was fine. His hearing wasn’t. I don’t know what your situation is like but hearing aids might be the solution vs a louder sound bar.

If you’re set on getting a sound bar there’s a used focal+sub on eBay right now for $650. It has ARC and sounds great.