I'll try to keep this brief: I currently have a J Retro preamp in my Lakland DJ5. In short, I love it. I am considering, however, taking out the J Retro since, when I do want to run the DJ5 passive, the J Retro's controls severely inhibit the options you have when using the bass in passive mode (you can't solo the neck pickup, for example). If I got the Sadowsky preamp/DI, I would effectively bypass this issue. Plus, I would have an active, albeit outboard, preamp to use with all my passive basses, eliminating the need for an active, onboard preamp in any of them. My main question is this: How does the Sadowsky preamp/DI (outboard) compare to the J Retro preamp (onboard) sonically? Do they sound similar? (I would describe the J Retro as sounding really big and modern, yet still cutting and possessing definition.) What are your thoughts/opinions? Thanks!