DDj SB2 unbalanced sound

Hi,

I recently purchased a SB2 and  want to use it with some active vonyx speakers which have both RCA and XLR inputs. 

Im not really much of an expert in the technical sound data , so if i could get some help with my questions below it would be a great help.

If i use a 6 meter RCA cable will i loose much sound quality ?

Should i buy a RCA to XLR cable , if i did would i loose sound quality ?

Or, should i buy a 

https://www.neutrik.com/en/product/na2m-d0b-tx

which will convert the sound to balanced.

thanks in advance, im really confused