I built an amp camp amp and they are really good sounding for the money and it was really fun. You only need a small amount of power to drive those. If you want an amp you don't have to build, the First Watts from Nelson Pass are amazing.
Otherwise a tube amp with an EL34 or a 300B will likely deliver a fantastic sound profile with Zu speakers.
Otherwise a tube amp with an EL34 or a 300B will likely deliver a fantastic sound profile with Zu speakers.