Surprisingly, very little. I have a set of the camo NV System I put on the bow when I got it. Probably not necessary, but I had them laying around, so might as well use them- they can' t hurt. The bow does come with Limb Savers installed on the limbs, and with the string leeches on there as well- there' s wasn' t a whole lot of difference that I could tell.

There' s more noise and hand recoil in my Supernova (which isn' t much) at 54#' s shooting heavy indoor arrows than there is in the Quest35 at 65#' s shooting much lighter arrows.

I' m not saying it' s the MOST quiet and shock-free bow I' ve EVER sampled, but it is very respectable in all aspects.