Beware of the MAC tube integrated amps with your Zu's. I have ZU Omen Defs myself. I wrote MAC and the total output gain is 44db. With the tubes you are looking at super loud tube hiss. I was running a tube pre with a ss, high gain amp with a total of 43db gain...the hiss was unbearable. I had to place a passive pre in between the pre and amp. I now have a tube pre and a low gain FirstWatt amp.
I say with your speakers...stick with Solid State if you are looking at Mac Integrated amps.
I say with your speakers...stick with Solid State if you are looking at Mac Integrated amps.