Which amp is best to drive Magneplanar 1.6's?

I loved the classe amplifiers with the 1.6's. If you are going for just a single amp get the CA-201 as it will have all the power you need. If you want to get more out of your 1.6's, then remove the internal crossover and build a custom line level passive crossover. Then just buy two used CA-100's (about $600 each) and use one per speaker. What you will do is use one channel for the bass panel and the other for the tweeter panel. I did this (but with different amps) and it takes the 1.6's to a level more on par with the 3.6's but with better integration of sound.

I used a Plinius SA100 MKIII with my 1.6s and the bass is hard to beat, addictive really. I would not recommend a subwoofer which would be hard to match with the excellent bass the Maggies already have, if you heard that setup I think you would agree, as it was very balanced and detailed with a beautiful midrange. Some people use 2 SA100s and report it wounds even better and would have all the power you would want.

Audio Research 100.2 200 watts into 4 ohms. Great combo

Another suggestion- CJ Sonographe 400, which is all solid state. ALmost too much bass for the bass-challenged Maggie MG12's (which valiantly tried and failed to produce anything more than distortion below 40-45 hz with the CJ), but the 1.6's will handle it just fine. Around $600 used.

I would definitely give the Odyssey stratos stereo or monos a listen. They are high current for those power hungry Maggies and they are very musical. The tonal balance should be just right with the quasi ribbon of the 1.6.