We have the Atma S30 on the Def2 and it is an outstanding match. Not lean at all. So David has some good thoughts on different amps that work on the Zu speakers.
Only issue we have with the S30 is it is noisy. Sending it to Atma did not heal it.
Only issue we have with the S30 is it is noisy. Sending it to Atma did not heal it.