I'm using the Innersound esl amp to drive 1.6's and absolutely love the sound. Another amp that I used before didn't have the power to open up the 1.6's, but once the Innersound esl amp was substituted, the maggies woke up with incredible dynamics. Althought I haven't heard the Innersound mono amps, here is a review that was used with the 3.6's. http://www.ultraaudio.com/equipment/innersound_esl_800.htm
Good luck in your search.
Good luck in your search.