Battery, better sound quality Options

[kion]

any tips would be great--
i am using NI battery as my main drum sampler (with hardware synth), but i just wish to know how to make the quality better and stronger.
when i have all the tracks together, the drum track becomes the weakest--not so clear. making volumes higher just makes the sound distorted.

of course, i dont have big studio set up, but would like to know anyways to make it better. do i need some kind of hardware equipment?

i am using motu 828 which is not bad at all.
suggest me anything--