Reply to General Audio Quality Help

So I'm brand new to the community .

Started DJing as a hobby about a year ago and have since started to become a little more serious about mobile DJing. I've done a couple of gigs, mostly in smaller venues/house parties. I'm trying to get a little more out of my speakers as far as overall quality. I feel like the sound from my speakers isn't what it should be. All my tracks are 320kbps. My gain levels are fine on my controller and nothing is really over-modulated...

My setup is pretty basic:
VMS 2 controller
American Audio VLP1500 Amp
2 Dual 15" Soundtech Speakers
-XLR from controller to AMP and 1/4" jacks to speakers from amp...

Any reccomendations on maybe a signal processor or some kind of accesory to improve audio quality??...I'm not too versed on the techy sound egineering aspect of things.

Thanks for any input.