New bass amp

Yes, I know that this should really be in "amps and exf", but I just thought I may get a slightly more bass-orientated response here...

This afternoon I bought a bass am, which is a relief  as I have been destroying my guitar amp with my bass, and I really needed something more powerful.

Anyways, the amp is a Peavey TNT 100. Its huge, and really throbs.
But I'm not really sure how to get a good tone from a bass amp, any suggestions for any tones?

The controls are;

-Volume
-Bass
-Shift
-Mid
-Treble
-Master volume

Also it has 2 inputs (high sensitivity and low sensitiviy it think)

Please help me!

Thanks

Peter