Add a pre-amp to Mola Mola Tambaqui?

In your experience is it worth it to add a preamp to the tambaqui?

I have a lumin u2 that features leedh processing

after listening to the tambaqui I am dead set on it. however, im wondering if i should get the makua pre-amp and add the tambaqui module ($20,700 retail) vs 13.5k retail tambaqui stand alone

I could also potentially use a different pre-amp maybe with a tube input stage.

however if i can avoid the pre-amp it would be preferable as that is a significant cost

i would be connecting to a krell duo 300 xd amp which feed kef blade speakers

does anyone have experience with this particular dac with/without preamp. How about preamp pairings?