ddj sz sizzling and hissing sound at speakers and headphones

I just bought my DDJ-SZ and it is sizzling/hissing on speakers and headphones. More audible on headphones. Also the Trim Knob got over loud (red color) easily when its on the middle position.

I tested the same headphones and speakers on my DDJ-SB and the sound is clear and perfect.

Ill try to return or change for another one...

sizzle sound is really sucks..hate it..