I built the speakers about 18 months ago to spec and they are quite remarkable, powered by the same Emotiva 5.1 amp that S. Linkwitz uses in his home. Also included is the miniDSP external cross-over. Firmly asking $600 for the speakers and $300 for the amp or both for $850. The amp is 9/10. Shoot me a PM and I will send photos. The speakers will be be professionally packaged to arrived safely and the amp comes with the double-boxed factory box. I would consider a trade for a small tube amp. Buyer pays shipping and PP fees.