Cary SLI 80 Signature Upgrade?

I have a Cary V12r that I had the Cardas caps installed in. They were better than the original ones, but I'd agree with Roxy. I'd be curious to see hear my amp with a set of Mundorf's in it.

Try Dueland caps. I have them installed in my Audio Note L3 preamp. They sound great. They're not inexpensive though.

Ghost Pepper,
A cap that is well thought of by minds much greater than mine is the Jupiter copper foil. They are supposed to be sonically comparable to Duelund, and the price, while not cheap, is far more affordable.
I am having an amp built presently, and I had the stock Mundorfs replaced by the Jupiters. Do a search for them in the forums.

This is a bigger topic than I was prepared for! I was expecting a simple yes or no. Ha. I should have done some research before asking. I have a feeling this will take some time...I'll look into the Jupiters first.

Live with the unit stock before you contemplate any upgrades. You need to understand and appreciate the unit's sound signature for a period of time before you attempt to modify the unit. Not all "upgrades" are sonic improvements.