Spectron amps will really drive all the drivers in the Maggies 3.6R with absolute control. I tested the Maggies 3.6R at the dealer with a Mcintosh integrated amp and with a Classe integrated amp. I then drove it in my setup with a Krell integrated amp. It wasn't until I brought the Spectron Musician III SE that the Maggies started to sing. The other amps never really got to control the bass driver. The bass was lite and and lacked pitch definition. With the Spectron amp, the base is deep, taught and fast. The mid-range has more weight and the highs are really controlled. There is not tweeter glare at all.
I've added a second Spectron Musician III SE to my setup. The Spectron amp can easily be bridged for mono-block use. With these two amps now, I get deeper bass with more texture definition and resolution throughout the audio spectrum. The sound just gets gets way better in every aspect with these amps in mono-block set up.