Amos Heller, bass player for the Taylor Swift Band, jams with the Dirty Deed distortion and the Shapeshifter Tremolo pedals. The Dirty Deed functions as an awesome bass guitar distortion, and blended with the Shapeshifter, you can get some really inspiring and creative tones.
http://www.seymourduncan.com/pedal/dirty-deed-distortion
http://www.seymourduncan.com/pedal/shape-shifter-stereo-tremolo
Follow Amos on Twitter- https://twitter.com/amosjheller