Burners are great. Features are great. Solidly built and great looks. But the blower that kicks in when the oven being used is LOUD. Intrusively loud. ‘Is someone drying their hair with a hair dryer’ loud. This fan kicks in when temps inside the oven go above roughly 185f, and will continue running at full pelt until it is cool again. 
I have been told this is normal. 
For the price, the oven really should use a larger and lower rpm blower for this task. It’s kind of absurd. Really brings down the overall impression of quality.