Duelund cast Pio Hybrid Copper/Silver or Rs series with Silver Bypass PIO

This is the cap Charles and I used and liked. All you would need with no additional bypass cap. 

Duelund cast PIO CU Copper series

 They  are expensive. Go ahead and email them saying you would like to splurge on these but need help and ask if they could offer you a  15-20% discount. They have for me in the part on these mega expensive caps. 

I am glad to have found this thread and would like to chime in with a question. I have just learnt to upgrade capacitors. I recently replaced the stock caps with a pair of Audyn True Copper Max caps to my Line Magnetic 518ia and had great result. And I just placed an order this past Friday at PartsConnexion for a couple Jupiter Copper Foil caps for the crossovers. 

Since I read this thread, I wonder if I should replace the Audyn caps with the Jupiter caps in my amp. Can someone please give me your advice?

I thank Zipost for starting the thread and thank all for sharing your experience. 

Happy listening! ... and experimenting :)

Zipost, 
I'd say that if you are committed to this region of top tier capacitors then get the CAST copper rather than the tinned copper version.  As Grannyring wrote,  these are the ones we've both have used with exceptional results. 
Charles 

@chumsusi   

No reason to replace those wonderful Audyn caps as they are also very, very good!