Need Input on Higher End Soundbars

Got a new TV and need some input.  I do not have an A/V processor or receiver so I am running the headphone out from the TCL into my Roksan preamp.  It works and it allows me to control the volume with the TCL remote, which is convenient.  It's a kludge.  I thought about replacing the Roksan combo, but I really don't want to do that.  Another idea I came up with was to get a soundbar.  I never had a soundbar, but I just read about Sennheiser and Devialet  making what appear to be high quality soundbars.  A one box Dobly Atmos is attractive to me.  Does anyone have experience with these two products, or could you suggest something similar?

Thanks for your help.