DSD Sr. DAC hiss

Hello, today I notice my DSD Sr. DAC produces a lot of hiss.

I have a headphone set. Never set the headphone amp in the maximus with nothing playing. Today I do it and notice the hiss. When I turn DSD to stand by the hiss goes out. The -20db lower this hiss too, but continues there. Is this a equipmente problem or normal ?

I mean, this not boder me when music is playing. Just cheking if this is normal or a problem in my DAC

Yes a little bit of hiss is normal.

Scroll down and read Ted Smiths comments if you would like more info.

Thank you. Try to search but nothing was clear to me