I own the original Sonus Faber Grand Piano Speakers. I was using the BOW Wazoo 50wpc integrated amplifier but decided these speakers required much more power so I switched to the McIntosh Integrated MA6900 200 wpc. My Grand Piano Speakers sound terrific and all my friends agree. They are very warm sounding speakers that include the right musical details and dynamics. They have great liquidity and smoothness over the full range of music. All of the above comments are on target so I suggest you listen to a pair in your room (if possible) with your amplifier and make your own decision. If you listen at a Retailer, please use the amp you expect to use to ensure all is okay sound wise. cheers....