Ok - my a20a 2022 arrived today from China. Shipping to NC (USA) took 16 days. The package arrived in good shape with good external and internal packaging. The parcel was surprisingly heavy, which was exciting.
Build quality is definitely a step up vs some smaller/cheaper Aiyimas I've been messing with lately. Well, at least fit and finish - I can't comment on the internals.
Binding posts were solid and well spaced, easy to work with even with my big fingers. The small switches on the back that toggle modes are pretty petite, but i assume they won't get much action. Volume knob is good, smooth, seems reasonably precise.
I'm running it right now on my "test bench" (aka in the garage) before I move it inside. I'm connected to some Snell K/IIs I keep down here for just such an occasion.
Initial impressions are great. No noise that I can hear (disclaimer: I'm in my early 50s). It's driving these speakers with plenty of volume, and I haven't tried to really push it yet. At about 30 min of steady medium-high volume it's cool to the touch.
I'm running in bluetooth right now, just because I don't want to haul too much stuff down here tonight. Connecting was easy/normal w my Samsung phone. Unfortunately this phone doesn't do Aptx HD, so I can't test that.
So, I'm very happy so far! I'd love to know how this measures. Or maybe not, 'cause I'll be slightly sadder if it bombs.
Picture of the setup attached. Hardly an acoustic paradise down here, but at least the Snells make everything sound fun.
I remain amazed at what you can get now for under $200.
Cheers!