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
http://www.theaudiobeat.com/equipment/pics/jeff_rowland_continuum_2_large_inside.jpg
Marani plate amp (upside down compared the above Rowland)
http://www.marani-proaudio.com/resizer/resize.php?url=public/PDA800P.png&size=1000x250
And in these also
http://www.marani-proaudio.com/resizer/picscache/800x600/73a9fee129dc4d9ca1c8b7ff5567931c.png
http://www.marani-proaudio.com/dettprodotti-PDA800P/95_60/eng/
Sangway Factory tour China.
https://www.youtube.com/watch?v=EZCxCg-QWDQ
Cheers George