I have a pair of CDM1s and those things need juice bigtime. I have a Yamaha rxv1000 which puts 100 watts to each speaker and they definately need it. I could see putting a 200 watt amp on them easily. I am using the LM1s for surrounds and the 100 watts is definately plenty for them. Much more sensitive. I wish I were made of money, I would love to go the 950/770 route.