Audio Research SP17 or Modwright LS100?

Solo,
I would appreciate it if you would be more specific about the sonic differences of these two preamps. I use a Resolution Audio Opus 21 directly into a Parasound A21 (Dynaudio speakers), but am thinking about adding a tube preamp. I've heard the Cary SLP 03- smooth, quiet, but lacking enough high frequency extension for my taste- and more recently, a PrimaLuna Prologue 3 in my system, which had better soundstaging, dynamics, expression of instrument harmonics and treble extension, but less quiet and fine grained compared to the Cary unit, if my memory serves me well.
Thanks!

Hello, I don't do too well with words but I will give it a try. My speakers are pretty neutral

Sorry, I will try this again, the speakers I use are pretty neutral and with a smooth midrange.

The Modwright was the one I almost went for because I thought the midrange was still smooth and detailed. When listening the sound was nice and prefer this type of volume control. The only thing I can say was the trebles was a little noisy at louder volumes but not from the listening position only when I went up closer but this is a non issue. I really like this preamp and feel it had that rich and slightly warm sound that you get from tube just didn't know the terminology why I didn't like the treble areas so much.

I actually picked up the ARC SP17 with the phono stage and breakin in now. I went with this preamp because it had the tube sound but didn't really have the tube sound. This probably won't make sense to some but I am trying to say that the pre is really transparent but in a smooth sound and not sterile or forward. The upper regions are very clear and concise without being too forward and harsh. They also are more airy but clean . The mids are smooth but feel this pre added a little more detail. The lower regions were improved as well with more oomph and detail. High definition across all regions without getting too forward or muddy. I actually liked the sound from the Marantz AVR with my speakers but IMO got the similar smooth sound with all the high definition. It's like their was a veil lifted from the Marantz. The synergy I feel here is just effortless but very clean.

The only thing for me is getting used to the ARC volume control even with the remote, a lot must think I am weird but I don't like it. I need to get used to it but love the sound.

Thanks for the response. Enjoy your new preamp!

Welcome! Solo13.