I will second the Cary 500 MB recommendation; best and most powerful amps that I have found for my 3.6's. Going to keep them for my newly ordered 20.7's too! They are the closest thing to great tube amps that I have found, they double-down to 1,000 watts into the Maggies, never ever run out of power, put out loads of current, and drive my Maggies to the low 90 dbs in my 17.5 x 26 x 9 room without any stress or strain. Very highly recommended.
Watch for a good used pair of the 500's and then get a decent tube preamp; you will be set for a long time to come!
Watch for a good used pair of the 500's and then get a decent tube preamp; you will be set for a long time to come!