Here is a quick update with my thoughts about the new Nordstrand Zen Blades. First no hum when you have them on at different levels!
I think the tone is really outstanding and has a very strong fingerstyle sound (sorry I don't play slap or pick so can't comment on those styles).
I have to say that I actually love the passive tone of these pickups, its so solid of a tone you actually don't really miss anything when switching from active to passive mode, which for me I find extremely rare, as most pickups are not this strong tonally. I would also describe the tone as better suited towards any style where you really need to cut through the mix because it does have a strong attack. Overall though it is very balanced between the lows, mids, and highs.
I think this pickup is a winner and probably suited best for basses with a flatter radius fingerboard, and if you have maybe a 7 to 10 inch radius then you might want to look at the Big Blades instead of the Zen Blades.
Also, if you love passive mode, or are wanting to make a switch from active to passive on a bass then I would definitely put these on the top of your list!
Hope this helps!
And FYI even though these are really great pickups, I am not 100% sure that they are the right sound for where I play now (a large church) so I may decide to try something else and could end up listing these for a great price in the classifieds, so if anyone is wanting the Bart BC size Zen Blades then shoot me a PM and if I decide to sell them you will be first in line.