I have a Spector Euro 5 and I'm about to swap in some Nordstrand Big singles and a Darkglass Tone Capsule. I need to swap in a stacked pot (for the low/high mids) in place of the seperate pots it comes with. I would also like to use a push/pull pot for the volume (active/passive) and will need a blend pot. Any recommendations ? I believe I need a 50k pot for the EQ and 250 or 500k for the volume and blend ?
You'll only need a few pots, not 50,000 and definitely not 500,000. This is what the DG manual reads: https://www.darkglass.com/app/uploads/2015/08/Manual-Tone-Capsule-V2.pdf
B50k means linear taper, and this is a very common pot for active eq. Stacked versions are fairly easy to find. Try all the regular guitar parts places, also ebay and aliexpress. They are aka "dual concentric" pots. Same for 250k push pull pots and mn blend pots.