The mids and highs through my Paradigm speakers are piercing to me with this amp, I just can't stand it! I am tapping into 8 ohms with the amp. I have two sets of Paradigms to choose from, the Titan Monitor 5s and Monitor 7v5s. As a final note, I never had these speaker issues with my Mid-Fi Onkyo receiver.
Your speaker had never sang with mid-fi Onkyo. Your speakers are singing now with Mc. You need a musical speaker to match with your Mc.