Perfect, fast shipping, good product.
They are super nice. Work up to very low voltages without any kind of weird noise or pulses. Very quiet at 8V I believe they were. Sadly, I fu**ing fried them both. Still not sure how, but must have been an over-voltage from the motherboard of the device. And the seller is quite cocky. My first order was lost during shipping and he just limited himself to say that "it was not his business" when asked for a bit of help to contact the courier Cainiao. Got my money back from AE tho.
Forgot to say that it was very disappointing to see how they ship them so carelessly protected. The pictures show how I literally found them after opening the box. The fans could move a lot around the box. Not cool for expensive maglev fans.