I bought both directly from taobao, which is the original supplier and has all the specifications. Aliexpress stores are mostly resellers, like the one where Dan bought it
I have measured between a PFC LLC power supply and a non-PFC LLC on A07 max, and the result is that the power supply with PFC is noisier, higher THD+N than the non-PFC.
I also measured with the smallest PCM5102A board on the market, the input signal is from Amanero directly and the other is amanero via ADAU1401.
In below picture it is THD+N vs Level 1kHz
That is the size of the packing box. AIYIMA often lacks information about the size of the product, the same with the A07 Max, I was quite surprised by the small size