Best Capacitors for Crossovers

I highly recommended Jupiter copper foil caps. I prefer them to Duelund and have tried both. Far superior to Mundorf in every way, but most especially in the mids and micro details. The Jupiter cap is very linear with no part of the sound spectrum highlighted.  I find the top of the line Mundorfs a tad boosted in the highs. The Duelunds a tad bumped in the upper mids. The Jupiers are so smooooth! 

You might want to try DIYAudio, but in the "affordable" boutique crossovers my favorites so far:

Clarity MR (now CMR)
Clarity ESA
Mundorf MKP
Mundorf Supremes

Yeah, I list the Supreme’s lowest due to an artificial Disney-like sheen or scintilation. It is NOT natural, you don’t hear it when listening to live music, but if you like it, do it! :) Magico is enamored of the entire Supreme line and why I’m not enamored of Magico. :) Clearly I’m in the minority.

Solen’s have been such a mixed bag now I refuse to even look at them. I hear good things from the top line models, but meh, not about to try them.

I also like Audyn Truecopper (Bypass values only)

The Mundorf MKP is a great upgrade for many, and the prices are hard to beat.

@grannyring Thanks for that. I've been seriously considering the Jupiter line, especially since Soniccraft has them on sale often.

I have a pair that sounds very nice, but I am thinking about completely re-doing the crossover design, and Jupiter caps in the tweet would be just the thing. :)

Best,

Erik