The nano 3 is pretty good.
Not perfect but decent.
I have 2 of them. I run them on medium
If they were to take 1 board from the a1446 model
make it do 3 speeds and use a 120/240 volt psu it would sell to USA home miners.
A 400 - 600 - 800 watt miner simple plug and play.
Wow, you bought it from our shop? We will have an event for the July 4th soon, stay tuned.