I don't own 20.1's but have heard them many times. bi-amping or using 4 mono amps is the way to go if you really want them to perform. One of my friends used 4 bryston (I do not remember which model) mono's with the bryston crossover. My preference would be for levinson, pass, Krell or similar highend amps (since the load on the 20.1's drops down to below 4 ohms.) They are great when you have enough power. Of course your needs will depend on the room etc.
Despriately looking for amp for Maggies 20.1
Blew a fuse on AR 110's krank speakers to preformance levels most of the time
using a Anthem 5A for surround speakers. now thinking of bi-amping or 500+ mono blocks I need a series of opinions of people who actually have owned them and driven them
using a Anthem 5A for surround speakers. now thinking of bi-amping or 500+ mono blocks I need a series of opinions of people who actually have owned them and driven them