The Summit has 2 B&O ICEpower ASC200 amp modules. They are rated at 200 watts into 4 ohms. This is the same amp used in the Bel Canto S300i integrated, PS Audio C100 integrated, PS Audio A100 amp, Red Dragon Amp1 monos and many other products.
Martin Logan woofer amplification
I was discussing a possible trade in for my Martin Logan Montis speakers. The store owner was reticent, stating that the amplifier for the woofer was an OP amp. I was surprised to hear that, since the operating space is so large. I thought it was a Class D switching amp, which should work well in a non ventilated cabinet, and operating at a low frequency. Any Martin Logan experts out there?