Sound quality-wise I have found WOZ and Hobbit to be very good and no need to enhance or change anything.
However when I got Dialed In I did notice the 'depth' / bass lacking not so much that I made any changes I just put it sown to cabinet changes and not really having a sound score like Hobbit.
Then I got Pirates and the sound was pretty bad (IMHO), it totally lacked depth / bass and was so tinny it was almost offensive to hear!
So I upgraded the sub and popped in a dedicated sub-woofer amp;
It transformed the sound on Pirates.
A week ago I took delivery of Wonka and the sound again was not great just like Pirates, this time I just popped in the dedicated sub-woofer amp and that again made a huge improvement far more immersive and with a great bass to the music, speech and sfx.
So much so today I have ordered another amp for my Dialled In.
Its a shame I have to spend more on a £10k machine but I can not abide poor sound.