I would have to agree with Nguyen that trying some different IC's or speaker cables might change things for you. I found my AVR-300 to be very sensitive to changes in speaker cables and their composition, silver will make a noticeable difference. I do not think you need to spend a ton of money on the cables however. I would try some inexpensive but good anti-cables first as I had good luck with those (or DIY, which is what I do now).
I would also sugggest that the Rotel has a very different sound than Arcam. I have used both in the last couple of years (along with Parasound, SimAudio and Ayre, I now use Ayre). I much preferred the quality of the Arcam to the Rotel, so maybe you just prefer the Rotel sound.
Bottom line is - if you don't like it try some different wires first, then sell it and try a different amp.
I would also sugggest that the Rotel has a very different sound than Arcam. I have used both in the last couple of years (along with Parasound, SimAudio and Ayre, I now use Ayre). I much preferred the quality of the Arcam to the Rotel, so maybe you just prefer the Rotel sound.
Bottom line is - if you don't like it try some different wires first, then sell it and try a different amp.