I listened to the Magico S3's with a Class D Front end for a good hour or so, was very nice. I liked the Sopra's much better with my Hegel H300, they dig deeper and sounded more musical to me. The Sopra's were better priced also. Have had them a few weeks now and the Sopra's get better everyday. Have about 50 hours on them now, cant wait to hear them with a hundred hours.