I just wanted to pop in and say I too look forward to first hand listening experiences, as well as direct comparisons with other Class D and other types of amps.
The use of GaN-based power transistor tech is now emerging for Class D audio power amplifiers. Seems appropriate to devote a forum thread to this topic.+1 Glad someone else did this.
The Technic SU-G700 listed in my OP appears to lack the GaN FET driver stage of the other GaN-based Technics products. Here is a GaN-based Technics server/integrated amp that includes a GaN FET driver stage:
A review is available at this link:
This is a newer technology, some are very using with mosfets , there are a a lot of good digital out there . In my Amp Danish Gato Audio they use Pascal modules, which BTW Jeff Roland uses and make custom analog input,output sections .
That meet or beat most Class AB amps out there. Times are changing very fast.