Just bought. I have not worked on it yet, but I turned it on and studied it. The soldering iron heats up quickly enough - faster than conventional cheap soldering irons for 220v. Tested with a hair dryer for the first time. Maybe it seemed to me, but it seems that the hair dryer heats up very quickly, literally in 15-20 seconds, and the power of the air flow seemed to me too high. They say that when turned on, it would not make noise, it is necessary to unscrew the bolts from below, which fix the compressor. I just now found out about this from previous comments. But when I turn it on, I don’t have any noise (On other sites they write that sometimes a soldering station comes without these bolts). Now I will study this issue.