||I purchased this unit and I am very satisfied with the quality! I dont know if it is normal, but its missing the spec plate that most electronic has explaining voltage, hertz, amps, serial number etc...
2 large fans reving lots of rpm to keep the unit cool causing quite a bit of noise.
Ajustable voltage & Amps is just awesome for anykind of work and it makes it fool proof.
The PSU can be used for various jobs. I just wish it had a USB port like some other Protek psu
So far so good for the price