I love my Sadowsky outboard pre. I play a Lakland passive and a Lakland active -- using the Sadowsky pre gives the passive Lakland a thicker tone and can boost the volume to match the signal I'm sending with the active bass (which makes switching basses easier on our FOH engineer). The Sadowsky pre is super simple -- I didn't want anything crazy or any amp modeling, etc. Just Bass, Treble, Volume, Mute!
I know guys who use the Aguilar Tone Hammer and the SansAmp -- Both are great too.
I know guys who use the Aguilar Tone Hammer and the SansAmp -- Both are great too.