Hi, over the weekend I first tried them to a Decware Torii MK4, not impressed, then I tried a Will Vincent Dynaco, a little better, but still not that impressed, so I hooked them up to an Emotiva XPA-2 and they sounded great, at first I only had them about 7 feet apart, so I put them about 11 feet apart and they sound really good, and these are stock X-staik speakers.