Hey, I have a M-audio Fast Track Pro and a pair of M-audio BX5a monitors, and a macbook pro, I would like to know what more equipment should I get to get the best of home recording... (I have one passive bass and one active) Should I get a pre-amp , or a DI or something? Cause I really don't like the tone I get plugging straight into the m-audio, it sounds like it's preamps are a bit weak for bass, good for vocals though..