Someone can help me tuning my bass to this 'crunch' tone like in this video
is that some kind of reverb effect or some tuning? please help me :P

http://www.youtube.com/watch?v=CpKV0UYbPNk

before the breakdown you hear it well

my rig: Esp F255 Crate Bt100 amp

the video is also kind of funny so have fun! :P

Thanks!