Thanks for the question and it is a good one. The QP9W PWRBR is superb and has a reasonable degree of mid bass, but like all SOUNDBARS, not deep bass. It has a sub-out so you can add an additional subwoofer.
I strongly suggest you get the QP9W PWRB + Subsonic for an amazing music 2.1 system and a great TV sound system. It is a bit more money, but the overall performance will give you years and years of superior quality sound.
Another option for you is QP9W PWRBAR + PSSUB 225 subwoofer if you have a large room (say 350 square’ or more)
Finally, the ALL IN 1 POWERONEHT 200 is the QP9WPWRBR along with a built in powered subwoofer in 1 cabintet. You can do that too.
I strongly recommend a subwoofer with any SOUNDBAR unless the purpose is basic TV listening. So, the 3 above options are what I suggest…Absolutely go for one of them and get that deep bass!!!