It's not the best amp I've had, it's not loud enough for parties, or even very loud music, and it doesn't drive my planar headphones well.
What it does do is easily fill my home/office room well above comfortable working & listening level, it drives my Sennheiser headphones pretty well, it's cheap & small and it just works.
For what it is, it's brilliant.
The TPA3250 from the article, and the TPA3251/TPA3255 that have higher power from the same range are in a different class to those IMO, with much less distortion, and are just ridiculous value for money.
Maybe I'll replace it with the amp you linked :)