System upgrade advice


My current setup is okay but the high end is too shrill. Some may call it sibilant. Its driving me nuts. My setup is:

Proceed PRE preamp
Rotel RB 1080 2 ch. amp
Oppo BDP-95
Paradigm Studio 60 v2

It does seem that the Paradigm tweeter is where the issue is since I also connected them to a Yamaha AV. The Yamaha toned it down a bit but the whole sound went down a notch. I'm considering replacing them with maybe some used speakers around $2.5k (pair) like some B&W 804s. If I did that, would I have totally out classed the Rotel and Proceed?

Looking some general advice or similar stories. Tired of my ears bleeding

Thanks.
vjb
The Infinity is a fun speaker, I owned 2 different ones in the past. But when I started in 1998 in audio I learned how instruments sound and how small and direct they are in proportion. I changed eveything. i remember that I sold my last Kappa 100 loudspeakers a few months after I started to work in audio.
The Proceed PRE Preamp is the culprit and is known to lean towards sounding bright, even a reviewer of the Proceed Pre mentioned not to couple this preamp with highly revealing speakers for example like horns.
Bo1, the Kappa 100's are not in the same league as the Rens which are classics.
All I care about is the sound. I owned a pair & could happily live with them even coming from my Magico S5's.