FirstWatt J2, M2 and F5 are terrific as are my 25wpc EL84 class A push/pull monos. My 8wpc Yamamoto A-09S or Woo Model 5 work very well too (both 300B) but I personally prefer the 25-watt transistor amps for their better low-level resolution, grippiness in the bass and lower noise.
What amp are you using with your Zu Essences?
Just a scored a pair of these and I was just wondering what people were pairing up with them. I've heard they work best with tubes. Has anyone tried solid state or Class D and then moved to tubes? How many or how few watts have worked for you? Thanks in advance for any stories.