To Focal or not to Focal

Really depends on what improvements you’re looking for and what sound characteristics are most important to you. There are tons of speakers out there other than Focal so if you share more about what specifically you’re looking for you’ll get better recommendations here.  BTW, you’ve got a great amp, and if anything I’d upgrade your preamp.

Focals tend to be hard on amplifiers, delivering sub-par bass unless your amp is pretty stiff.  They also have a unique sound and off-axis presentation which has a lot of fans, but also means you should not go there without listening.

Also, room acoustics matter. 

@erik_squires good points about the Focals being power hungry and the room acoustics.
I used to have DNA 0.5, DNA125 and 225. All are great amps. I also owned Rogue ST100 with RP1.
It’s been a long time, probably 20+ years since I heard those NHT speakers, but I still have the AC1 center channel that I just recently replaced with Focal Aria CC900 purchased together with the standmount Aria 906.
The CC900 is a better speaker than the NHT.
And the Aria 906 have definitely surprised me in a good way, driven by a Marantz AVR.

So my recommendation would be to upgrade the speakers. Keep the RP1/DNA1 combo. I think you’ll like the Focals - they’re warm and very engaging sounding speakers.

Not

I should qualify. Not because the are not decent speakers, they are. However they are stupidly expensive and you can get the same or better quality for much less. 

In my opinion to Focal or not to Focal is to Focal. Might check out this vid comparing the Chorus W to the Aria which I’m assuming “may” have similar voicing to the Thieva. 

I’ve had Aria and currently my main speaker for the past few years has been the Chorus 836W. I’ve tried other more expensive speakers over the past couple years and keep coming back to them. This video pretty much sums up the difference I heard in my room. 
 

The Aria sound sweeter to me than the Chorus in this video. There are also differences in room acoustics - no panels with chorus and a ton of room reverb. Who knows what else is different.

....some just gotta Focal around....

(...couldn't resist....Yes, you can dope slap IRL someday....)

@audphile1 ,

Yes I can see how people can prefer one or the other. 

They are very differently voiced. 

With the Release of the new Evo line there are good deals to be had in the Aria line especially on the used market.  Pair 948s on here for around $2.5K and the 936 and 926 for even less. 

I have always been disappointed by “low end” focals. I have seen 1038be and 1028be used speakers go super cheap. I would personally look for a deal like that. They are really close in sound quality to the Sopra line.

to be clear I like focal just  or the lower models.