Zu's can have a slightly aggressive high treble with solid state. Tubes fare better. Avoid "bright" mps or amps with an overly lean presentation. That said, I had good luck with a Rega Elicit before I switched to tubes.
You must have a verified phone number and physical address in order to post in the Audiogon Forums. Please return to Audiogon.com and complete this step. If you have any questions please contact Support.