Check out Spatial X3 speakers.....powered 15 inch woofer and 97db sensitive, 8 ohm and you are only driving 100hz on up. Very transparent!
Check out Tekton Moab, Encore and Ulfberht......high 90s sensitivity and 4 ohms. Super transparent!....14 tweeters in parallel acting as midranges down to 400hz.
Check out GR Research....many open baffle kits using planar, cones, open baffle servo woofers..incredible sound.....way easy to drive.
Check out Li Speakers.....Chinese full range drivers that are 90 plus db to drive, super inexpensive and very transparent.
I am sure the Parasound amps are very very nice. But, do you need them? Do you really need 180 amps peak! Are you going on tour with the Who? Are you filling a stadium with sound? Are your speakers really that demanding? Do you play that loud? Remember, a speaker rated at 90db needs one watt at one meter....maybe 5 at your listening position.....so 100db at your seat requires 50 watts....and 110db requires 500 watts (all assuming nothing less than 3 ohms). How loud do you listen? However, if your speaker is 2 ohm or less then you need way more power for any given level. Super low impedance speakers just don't make sense (unless you already own them and cannot let them go) FACT!
The NC1200 has tons of power and there are very very few speakers that they could not play super loud. If you have never heard this module drive low impedance speakers than you know nothing of their capability (1200 watts at 2 ohms is plenty!). This is not an "I think" game. This is an "I know" game. The only way you know anything in audio is to listen. Words are just words. Truth is discerned by the ear.