Audio Express May 2022 Issue
https://drive.google.com/file/d/1dLd9QUK2uSOtCFfTcrix76zSrSVNI9c6/view?usp=sharing
“Both in use and on the bench, the Ultra was an exemplar of modern audio power amplifier technology, and could easily be an endgame for upgraders.”
and
“Lots of superbly distortion-free power in a tiny, cool, and customizable package or prepackaged in an unobtrusive stereo amp. How can you go wrong?”