The Professional Series four π, seven π and ten π loudspeakers aren't the best suited for SET amps, but they aren't the worst either. Their efficiency is good, and their impedance curve is acceptable, but it's a close call. Some SET amps sound a bit anemic on them, but the Paramours work great with each of them.

One thing about the ten π's - If you have two good corners, I think you'd be happier with seven π cornerhorns instead. If you have only one good corner or something like that, the ten's are great along walls where seven π's could not be used. But unless the room is huge, the speakers are so large they are intrusive.