Put a new electronics package in my Super J.
Signal path from front to back:
3X SF2 pickups
Series/Parallel switches
Dingwall D-Roc switch
StellarTone ToneStyler Bass 10
Nordstrand 2B+3A 2-band preamp
The big change was removal of the Glock preamp and replacement with the Nord and the ToneStyler. The Nord is a boost only circuit that Carey described as being similar to a classic Sadowsky preamp. To my ears it lands sonically between the classic Sadowsky thing and a Stingray’s preamp. The ToneStyler is a stepped passive tone control that has more favorable top end roll off compared to a typical passive tone control to my ears. The Nord is a wonderful sounding circuit that somehow sounds great and not at all bloated and overly bright with both controls fully boosted. The specs would make me think the opposite, but it sounds great. That setting on the preamp tempered by the ToneStyler on setting 7 or 8 along with the pickups in bridge-middle parallel, the bridge in parallel and the middle in series is just wonderful.
My custom order SJ5 has a Neve which is a similar 2-band boost-only design and a passive tone control. I suspect it will be very similar. I’ll likely throw a ToneStyler in that one when it arrives as well. Hopefully that one shows up sometime in the next decade