Luxman 505uXlI vs Cary SLI-100

@builder3

You have the amps and speakers, the room, presumably the music, but want strangers on the internet to choose the combo that sounds best? This couldn't make any less sense.

could not agree more

hard to think of speakers more different in sound that maggie lrs and klipsch heresy LOL

@unison77   

I am wondering what I could do to my Cary SLI-80 acquired in 2003. The only upgrade I made some time ago were Jensen PIO .22uf coupling caps. Before that, we tried VCaps for a year and eventually replaced them with Jensens.  

The factory available upgrades include Mundorf SilverGold Caps, Jensen Caps, Hexfreds, Greyhill Switch, WBT Speaker Binding Posts, Kimber Kable.  I'd suspect the Mundorf caps and hexfreds may be worthwhile. 

You can get the parts from Cary and DIY if you like.

https://carydirect.com/shop-now/diy-parts.html  

+1 three_easy_payments

@unison77
Do what he said.  Or, call Steve or Billy and send it in to Cary.  A good local tech might be better if you have one around your area who does "tube amp upgrades", and you might get a better job.  17 years of good use, time for a nice refresh for your SLI-80.

Lots of nice KT88s to choose from now days, and some good 6SN7 and 12AU7s tubes while your are at it, the 2003 was V1 of that amp as I recall, and some upgrades already mentioned will help. Maybe call and get a quote.  A buddy of mine had the same amp, sold it, and bought the new one with all of the upgrades, he's super happy with it.     

I loved my former SLI-80 Signature several amps ago, tried VCAPS and Jensen PIO caps, better resistors, silver wiring, and eventually went down the path of Mundorf SESG Silver Gold EVO Supreme (non-oil) caps and never looked back. Used them on my last three amp setups.  
If you get stuck, PM me, would be glad to call and bug them for you.  They owe me some updates on classic monos I was pushing on a while back.