Yes,I am familiar with that irresistible feeling about the B&W `s ... I was considering the 684 myself,but my missus decided that the Mezzo 6`s are to her liking so that was decisive 🙂 I am currently driving them with a receiver and I`ve never been disappointed, but two weeks ago a friend of mine gave me his stereo amp Marantz PM 7200 to try them on with ...man, that was some difference. I doubt you`d be disappointed connecting yours to the receiver,but I also highly doubt you`ll get get even close to the sound that the Azur 650 A produces. It will be very interesting to share your thoughts on that after you`ve tried them on ....