I have an HK 3490 running a pair of m3s in my office and am very happy with that combination. When my m80s first arived I gave them a listen with the HK full range and no sub and did not think it did as good of a job with them as it does with the m3s. Im not sure if its really intended to drive 4ohm speakers. I read that it can if you only run 1 pair at a time but I have a feeling that is what was causing the less then ideal results I experinced. If the 3490 is the choice for receiver you might do better with a pair of m60s instead.
