my first analog setup , some advice please

Hello friends.. So here is the story
I recently bought my first ever analog setup , and little over a year ago i started my first hight end stereo system. I bought every component after a lot of reasearch and i’m really happy the way it sounds. So for my analog setup , i got a VERY good deal for a Pro Ject Xtension 9 evolution turn table , Van Den Hul DT II Special cartridge , and Pro Ject Phono Box Rs pre amp. I’m a little skeptical about the phono box, i asked my dealer if he things that i need to get a better phono box , and he said “ not as long as i have the Van Den Hul Dt II Special cartridge “
so.. Quastion
Do i need a better phono box ??
I know many will ask “ does it sound good ?“
and the answer is yes ! and i’m really happy with what i payed , but like i said , i’m new to this and i feel there is a lot of potential for my system..
the rest of my gear
dali euphonia ms5
edge nl10 amp
benchmark dac3 pre amp
ps audio p10 power plant
and all around good wiring

thanks