Duetta Sigs really like high powered balls to the walls SS amps. I once used a pair of Rowland 1's strapped in mono (240 watts per side) to power Duettas.....and a Rowland 8 (250 watt stereo) blew them away. I didn't listen at gosh awful levels.....but they like the juice. Krells really work well with them. How will Sonic Frontiers do? I don't know.....but I suspect you might prefer the sound of a used Krell.
