A part of the review has been auto-translated.
All spurious emissions tests passed by FCC standards, to the best of my ability. I used 70db of attenuators (a 60 a 10) out of an Elecraft KX3 running at 5 watts AM on each HF band. The Micro PA-100 passed each one by at least 50 db. I am posting this for any potential USA buyer who is worried about the lack of an FCC ID. Please keep in mind that my abilities, equipment, and knowledge are limited and I may have made mistakes. However, I feel comfortable using the unit I received in the USA. I have included two pictures of the worst bands. On the other bands, the harmonics did not get above the noise floor.
great amp,, arrived in 10 days _banggood are always good and very fast shipping _it doesnt come with the manual _but you can find it on the net,_there is 2 manuals available, for different firmwares , one is for the v3.0 the most up to date firmware _so make sure you are reading the correct one, I got it for going portable, I have tested it with a lipo_30A battery, there is still a small amount of voltage drop, so.on some higher bands it will make only 75-80w , from 20m down it came make up to 110 watts with 5w in so I have to turn the power down to 3-3.5w the power meter does read a bit high about 5-10w_I have tested it with my Bird power analyzer,_I am very happy with the amp_and the great protection it has onboard _the automatic band switching works great as the ICOM IC 705 does not have band switching voltage output, so it is a big help,_and the small size is great_and it will be very cheap to fix if you blow the outputs as they are cheap fets that are fitted and you can get a bag from only. a few pounds,_it looks like the firmware is updated often, there is plenty of info on how to do the updates if you want to._Dave 2E0DMB