I'm with Phil on this. You need power and control with the Maggies and only solid state will give you that. In my bi-amped InnerSound system I use the 600 Wpc InnerSound amp to drive the woofers and the Monarchy Audio SE-160 Class-A hybrid monoblocks to drive the ESL panels and the sound is truly amazing. As Phil noted, when used full range, the InnerSound amp leaves some room for improvement. For that reason, I would probably opt for high-powered hybrids like the Monarchy SE-160s, which provide over 300 Watts each into 4 ohm loads. They use a single tube input driver and a beefy MOSFET output stage. Their sound is very lifelike, open, and detailed. They communicate the music better than any other amps I have used (and I've been through quite a few).
Another alternative that would yield almost as good sonics but with higher power would be to use a SS powerhouse (like the InnerSound ESL amp) in combination with a tube line buffer such as the Z-man ASE or the Musical Fidelity X-10D.
I have used the InnerSound amp with the Z-man to drive Maggie 12/QR speakers and that offered a nice improvement over the InnerSound amp by itself. It combines some of the liquidity and sweetness of tubes with the brute force and control of solid state. Frankly I'm surprised that more folks aren't taking advantage of this type of setup.
Another alternative that would yield almost as good sonics but with higher power would be to use a SS powerhouse (like the InnerSound ESL amp) in combination with a tube line buffer such as the Z-man ASE or the Musical Fidelity X-10D.
I have used the InnerSound amp with the Z-man to drive Maggie 12/QR speakers and that offered a nice improvement over the InnerSound amp by itself. It combines some of the liquidity and sweetness of tubes with the brute force and control of solid state. Frankly I'm surprised that more folks aren't taking advantage of this type of setup.