GaN-based Class D power 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. At least 3 companies have commercial class D amps in their books:

Merrill Audio, with their model Element 118 ($36k per monoblock, 400 W into 8 ohms, 800W into 4 ohms), Element 116 ($22k per monoblock, 300 W into 8 ohms, 600W into 4 ohms) and Element 114 (coming soon).

Review of Element 118 at this link:

ADG Productions, with their Vivace Class D amp ($15k per monoblock pair, 100W into 4 ohms). (The designer emailed me indicating he has another product in the pipeline.)
Review of the Vivace Class D moniblocks at this link (warning: link might not work (1/11/2019)):

Technics SE-R1 Class D stereo amp ($17k per stereo amp, 150WPC into 8 ohms, 300WPC into 4 ohms)
Preliminary review of the Technics SE-R1 at this link:
Technics also has a lower priced GaN-based class D integrated amp in their catalog:

Anyone listened to or own any of these amps?

PreviewAg insider logo xs@2xcelander
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.

Just a clarification... There is no GaN-based technology in the Pascal modules used in Rowland amps.

Regards, Guido


If these new Class D amp have as little parts inside as the other types of Class D amps, I would  spend my money elsewhere.
There is no GaN-based technology in the Pascal modules used in Rowland amps.
No there isn’t.
Some of Rowland’s that use Pascal modules, started of from Sangway Class-D modules from China.
As can be seen here in the Rowland Contiuum 2, and the same module in these subwoofer plate amps.

Rowland Continuum 2

Marani plate amp (upside down compared the above Rowland)
And in these also

Sangway Factory tour China.

Cheers George