Youve probably read, but high current amps seem to be the best fit. My 1.7i s are powered by my 42 yr old Carver M400. 200 wpc into 8ohms about 300 wpc into 4 ohms. This little amp barely gets warm after a couple hours of high output, but yes Bryston, Odessy, Hegal seem to be the amps of choice for Maggies. Im due for amp upgrade and will be looking more into these brands. Check out Planar Circle best amps for Maggies (not exact title).