Don't forget that you will have to purchase cables between the 970 and any amps that you get. There are varying opinions on this. A 7 pack of the 0.5m outlaw cables will cost you another $105, and I would bet that you would need longer cables than that.

The big question back to you is what kind of speakers are you using? How efficient are they? How big is your room? How loud do you like to listen to things?

Regards,

Charlie