Thanks for the prompt reply Daniel.
Can you add an option to "hide" it in a future version of TotalMix?
I mean, an option to set a "minimum level" value for the analog inputs meters, so lower levels won't blink constantly on the numerical level display.
Thanks.

Okay, so I'll just minimize unused channels so it won't blink, and add noise gate (with Dynamics) to used ones.
Thanks Daniel

Alternative answers:

Just be extremely grateful that the (peak) noise is fabulously low at -100dB.  The RMS noise level (as shown in the specs) is at least 10 dB lower;

OR

Make a few TRS shorting plugs - take a TRS plug, open it up, short the tip and ring lugs together, close it up again - and put them in unused line inputs!

I just came across this thread and I'm actually seeing peaks around -55dB at times. Nothing connected, doesn't seem right to me.
Only just purchased this UFX (second hand) and it's one of the earlier models.
Any suggestions on how I can get the self noise down? Or is there something wrong with this unit?

Hi Matthias,
The mic pres are all good, ie -96 thru -100. It's the line inputs on the rear. It's not constant either. All set yo +4dBv.
It's not always there, just noticed the other day and have been watching it come and go. I'll have to hunt down and see if something external is causing some interference.

Cheers,
Matt