Always had a weakness for small form factor components, going back to my 80's Aiwa separates. I've been intrigued by the small Parasound units as well as the Pro-Ject stuff but haven't listened to them, nor read much in reviews.
Here's a TPA3116 amp from YJ with Sieman coupling caps, snubbers and SMPS power supply.
Yuan's garage? Who cares.
If you value looks, brand names, and price over performance it may not not compare to the others. But if you consider performance alone then it's a different story.
Nothing DIY about this naked TK2050 amp unless you decide to build a case. It's the tiny spec to the left of the tube preamp. Like most it's plug and play.