Jupiter copper foil caps 2.2uf. $200 for both at Sonic Craft. Place the Duelund .01uf silver foil bypass caps in parallel
I found the quote below on the Soundlabs Group website under Auracap instructions, is what you are talking about above not in the signal path ?
Do not use bypass capacitors in the signal path. A single capacitor for DC blocking / AC coupling creates a simple path with one time constant. The signal quality will be compromised if a bypass or multiple bypass capacitors are added to a signal path capacitor.