i bought a bb1024x from an ebay store a couple weeks ago for $830 shipped and have played it alot.
the short story is i love it. my main bass is a 1963 pbass, so you know my perspective.
setup - surprisingly, the setup right out of the box was fantastic, really. and the radius of the neck isn't flat, it looks and feels more like a vintage bass. the setup was what i consider very low, but still with no buzzing or fretting out. the neck width feels like my 90's mia jazz bass, but a bit beefier, which i really like. i don't know what it's strung with, but the strings are bright, but not too much and still beefy. a bit too bright and zingy for me, but i think most folks would like these better than my go to thomastik superalloys. i love the fret size! finally, a bass with smaller, but not tiny, frets. they're not quite as small as the frets on my old pbass, but definitely smaller than most modern basses i've played. i can't really comment on the steel nut, as i've never owned a bass without a bone type of nut. i can say it was slotted perfectly. kudos to whoever set this bass up. i did not expect it and it was a more than pleasant surprise.
sound - it has a 3 way pup toggle, which i love!, so it limits the pup settings to p pup soloed, p and j pups equally blended, or j pup soloed. this is the first p/j pickup bass i've owned, so i don't have a reference other than to compare it to other pbass and jbasses i've owned. the p pup sounds great. it's hotter than the lollar in my pbass, but sounds like a good pbass should. it does not sounded hyped or altered like a dimarzio or bart or emg, just like a hotter vintage pbass pup. the p/j pups blended sounds somewhat like a jazz bass in that the mids get a bit scooped for that hollow sound, but the lows seem more focused. i like this sound and it's a new one for me. it sounds great with distortion and picked or clean slapped. very different than just the pbass pup but the volume seems exactly the same between the settings. awesome. the jpup soloed kills. i've always liked that burpy bridge jazz bass sound, but my jazz basses with the bridge soloed always sounded thin without some additional eq. none is needed with the bridge jazz pup soloed on this bass. burpy but beefy and at the same volume as the other pup settings. again, awesome. i think this will make the bass and its different sounds so much more usable live. i would feel comfortable changing sounds within a song just with the pup settings and not worry about the mix changing. the blended and bridge pup soloed do have just a bit of hum, but not nearly as bad as my jazz bass. i record a fair bit at home, which is a 1960 mid century modern house with spotty and ungrounded electric, so i'm sensitive to hum. i expected worse, and am pleasantly surprised by how quiet this bass is for a passive bass. i'm one of those guys that always keeps the tone knob full on and makes any needed adjustments at the amp or console, so i can't comment on the tone control. it does and doesn't do what all such tone controls do...
construction - i like vintage basses, so some of the more modern features are usually lost on me. stuff like the splined body, multi-piece neck, angled string thru bridge don't impress me, only because i don't have the experience to know the benefit over traditional construction. until now i think. if all that stuff contributed to how great this bass plays, sounds and feels, then i'm now a believer. there no dead spots or wolf tones on this neck. i'm not a flashy player, but i do play the entire neck and i'm picky about dead spots and wolf tones. i can live with them, but i have to know the bass well enough to play around them. not with this bass, it plays and sounds great all over the neck. another nice surprise. as with most newer cnc made instruments, the bass seems very well made with crazy perfect tolerances. the hardware all seems high quality. i do like the angled string thru bridge and that softer angle makes much more sense to me than the usual string thru bridges with a sharper angle. i don't know why, and i don't know if it really makes a difference, but i like it. i'm not picky about finishes and usually prefer beat basses, so my opinion likely isn't valid, but the finish looks fine to me with no issues. i bought the 'caramel' finish, which is a translucent finish in a darker, browner toned amber. the black pickuard and chrome hardware gives the bass a modern vintage look and feel, which i like.
that's a pretty good overall description for the bass i think, modern vintage. the only thing that would make this bass cooler for me is if they had that 70's fender translucent mocha finish and maple necks available. but, i'm happy to have such a great stock bass that's well suited for me. and it's all about me, right?
i hope this rant helps someone considering this bass.
tony