Sorry I'm not willing to part with my new amp. It would be neat to see how it stacks up against the other amps that have been tested by amirm though.
The only scientific testing that I know of that has been done is listed in the photos on the manufacturer's WEB site.
From the manufacturer's WEB site:
"We added a few photos showing some of the specs of this amazing little amp. You will see it putting out 600W RMS Into 8 Ohms at 0.01% THD+N - Right and Left Channel. You can see 1KHz and 1W with 0.006% THD+N with No Weighting, and 0.004% THD+N with A Weighting. We're still putting specs and documentation together for this amp, but wanted to show what it's capabilities."
https://premium-audio.com/mini-gan-5-balanced-power-amplifier.html
It's a very nice modern small and powerful Gallium nitride class D amplifier that has no problem driving my tiny Tang Band W4 1879 4" speakers like well made musical instruments. The speakers enclosures are IWISTAO HIFI 4 Inches Full Range Speaker Empty Labyrinth Birch cabinets.
The sound reproduction that my ears experience are precise 3 dimensional harmonically clear frequencies that are juicy and soft with no sting. Very easy to listen to my ears. Immersive and enjoyable.