New/Used Amp recommendations for about $3k-$4k?


I'm looking some new Paradigm Founder Series 100f speakers and would like to get rid of my Emotiva UPA-1 mono blocks for something else. 

I really like the form factor of these amps and have been very happy having them and they will make the next buyer happy also but I want some thing very detailed and clean. 

I just got rid of Emotiva XPR-1 mono blocks after hearing the 100f's on them and could absolutely hear the detail and cleanliness those amps had with these speakers. 

What do you think?
todd1010
Well there you go... a monster AV Preamp at the heart of your system and you aren’t satisfied w/ music performance. Let me guess, guitars could sound a bit meatier, brass a little brassier, vocals don’t have that holographic 3d realism, performer in the room with you type of thing. Maybe a few panes of glass could be in the way? If only there was a solution. Enjoy the SS amp merry-go-round.
todd1010 OP
I’m looking some new Paradigm Founder Series 100f speakers and would like to get rid of my Emotiva UPA-1 mono blocks for something else.
The 100F’s drop to 3ohms around 100hz, but!! are also -45 degrees phase angle there too, which means they could be as 1.5ohm EPDR load as seen by the amp.
https://www.soundstagenetwork.com/images/stories/loudspeakermeasurements/paradigm_founder_100f/imped...

https://www.soundstagenetwork.com/images/stories/loudspeakermeasurements/paradigm_founder_100f/elect...

If you want the very best out of them in that bass area, suggest an amp that won’t flinch at those kind of bass loadings.
My suggestion for your budget would be used John Curl’s Parasound Halo JC1 monoblocks. They can be switch to high bias sweet Class-A sound for serious listening. And low bias for other listening, rock or background.
https://www.stereophile.com/solidpoweramps/774/index.html

Cheers George
What I was digging about the 100f’s were the mid range/tweeter.

I'm very curious about those GAN amps mentioned above. 
I’m very curious about those GAN amps mentioned above.

Great if things stay above 3ohms, but your 100f’s don’t, they won’t bring the best out of that bass area like the JC1’s could. 

Cheers George
georgehifi

wow, that John Curl you linked is something.

two Krell 402's are for sale here. this one says new caps

https://www.audiogon.com/listings/lisa1a86-krell-evolution-402-solid-state?creative=305983658573&...=

any comparison advice Krell to Curl?