Mac 2200 preamp, mono Crown amps xti200 900 watts each for subs,with electronic crossover built into amps, Odyssey Stratos mono amps high current ,for driving Magnepan 3.7 speakers,Sota Nova turntable with vacuum hold-down ,Cambridge music streamer , Wyred for sound digital converter,. 2 Vmps larger subs (hiding behind magnepans) handling bass below 100 hz. This system has incredible dynamic range . in my opinion 3.7 magnepans can only play the most dynamic rock passages with good subs and high current amps. The crown amps are only $500 each and you can customize the bass crossovers using your laptop for seamless integration with the maggie 3.7. and a huge 900 watts for each subwoofer. They have the new 15" and 12 " aluminum drivers that control the whole room. . The mono stratos are only rated at 135 watts but they can put out about 600 watts into 2 ohms and can handle the low impedance of the magnepans better than any amp i know of for a reasonable price . you need the Furman elite 20 amp power conditioner because the system pulls alot of wall current and this furman adds another octive of bass control.
So I had some early Kismet in Stratos monos powering my 3.7i's, but then I switched to a Sanders Magtech and was blown away. If you listen above 75db, you should check out the Magtech. I do not believe the Odyssey amps are nearly powerful enough to drive Magnepans at high volumes. They get really harsh.