After Blackgates... which caps are best for Audio?

The best, and unfortunately most expensive, are Duelund. The thing however is to use them judiciously depending on exactly where they appear in a circuit. A speaker designer I know uses them all the time but only at critical places such as in the signal path. At other places cheaper stuff like Erse or if you want to up it a bit Obligato will yield virtually the same result. If money is an issue Obligato bypassed by Duelund is very good.

Thanks
Bill

I don`t believe Duelund is a "film" capacitor as mentioned above.To my understanding they`re pure metal foil and PIO(paper in oil) for the VSF and CAST versions. Not sure about their lower cost Alexander caps. The main obstacle to using Duelund is very high cost as Bhobba states above.I`ve yet to read of anyone disappointed with their performance after purchase.
Regards,

Elna is pretty close to Blackgate. Have been vey impressed with the F&Ts. Have used Obliggatos Golds in place of electrolytics in crossovers

Where do you want to put them? Dac Board? Power Supply?

http://www.soniccraft.com/black_gate_capacitors.htm