Yup. I saw that. And he’s keeping them! Hard to give them higher praise than that. He seemed to agree that Zu has improved the sound in all the ways they claim.
I’m eventually going to try to get my hands on a First Watt amp. They’ve always been reviewed as some of the best amplifiers for Zu speakers. It looks like from your profile pic you have a Decware Zen Triode—read nothing but good things about how it pairs with Zu for modest listening levels.