I had the Modwright KWI-200 and thought it was an excellent IA, especially since my speakers are rated at 84dB
the KWI-200 had no trouble driving them, lots of head room and sounded great with some warmth....not sure what coarse sounds like, but for me the MW performed well within my system. In fairness I have not heard the Hegel, so I have no base to compare the two. If the Hegel is working for you that's great.