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
Nice amp.  Congrats.  You still need to try a good 2-channel preamp — it’ll be a big improvement over your Marantz that may sound “nice,” but a lot of things sound ok until you hear something better and then it’s not so “nice” anymore.  I just think your speakers and new amp outclass your processor, but do as you will.