All of the sounds should be good before tuning. Trueplay adds that last 5% in my experience (all numbers are made up).
If it's sounding distorted, you might have a bad component. I'd suggest that you
give us a call on our support line and a technician can confirm that and take a closer look at what you have going on there.
I had the same problem. Thought the tuning would change things. Spent hours on the phone with support. Just got a bad one out of the bunch. Most dialogue was so scratchy and music so bad I had to unplug it and revert back to the tv speakers. Sounds like something is loose inside or maybe a bad or cracked mid or tweeter. Shipping back and awaiting a new one. Very unhappy about having to ship back first and then wait for another. Customer shouldn’t be inconvenienced . Should send me one then I ship back mine. First time in my life I threw away the original box....who knew now I have to figure out how to package it properly and send back.