I spent quite a bit of money on the RP-8000fs. And like many have complained with Klipsch speakers, they are too bright. I have really really good ears. Maybe they are designed for not so good ears.
I starting to play with a few things. I'm noticing ear-pain from long exposure. (a few weeks now with them...)
I've started to investigate different speaker positions. I keep changing my AVRs Equalizer levels. I invested in a SPL meter to really find what they are producing.
The quality of recordings is extremely important. Provenance of the recording is critical. Modern recordings that were captured and mastered in hi-res (24bit/192kHz PCM, or DSD), and delivered in a hi-res format (e.g., Blu-ray, SACD, 24bit/192kHz download) will generally deliver the best audio quality. Poor quality recordings, and recordings in low-bit rate formats, can sound harsh.
If you decide to try a new amp, I suggest that you audition tube amps. I greatly prefer tube am