I've spent the weekend playing around with the Bassbox. It's a great preamp, but I'll probably be letting it go soon. Why you might ask? It was really nothing the box did wrong, it was more my tone preference. The BB gets a great clean tone. Lots of options & the compressor worked great. The only problem is I prefer a distorted tone, or at the very least some good grind. (Think King X, AIC, Tool) I can get there with my Darkglass X-7 in front of the BB. But since I have a Fractal FM3 inbound soon & a Tech 21 DP-3X already, I think I'll have my pre-amps covered. (not to mention my trusty old BDDI I've had sine the 90's)
My final opinion is the Atomic Bass Box is a well built & fantastic preamp. It also makes a great practice tool with aux-in & headphone out. While it didn't work for me, I wouldn't hesitate to recommend it. Thanks @jimfist, @bassgiant15 for the help along the way. Cheers guys!