Im sure this has been covered here before, prob many times, but I wanted to reboot this since its 2015 and amp technology has changed drastically in recent years. WHY would players use active basses and/or preamps when you can simply adjust your preamp section of a decent amp. The only viable reasons I can think of would be: 1. Drive the signal harder to the amp which seems to be a little bit obsolete since most modern amps have input preamps. 2. Tone shaping on the fly could be easier from the bass controls rather than fiddling with amp knobs during songs. I guess as a "purist" and we'll as an electronics engineer I have a hard time understanding why players add time shaping on top of tone shaping when you can simply get a decent amp and call it a day. Personally I play passive basses and run my amp close to flat (Ashdown ABM 500) and I get compliments on my tone at just about every gig I play! Thoughts or insight???