• Registered: 2021-03-30
  • Posts: 15

Topic: UFX+ make small noise on all input with 176/192k sample rate

I don't connect any input at current.
Not happen on lower sample rate.
Does it means a potential hardware failure?
https://ae01.alicdn.com/kf/Ua961fffc94284ab1ad6a06f0066f1dd4Z.jpg

  • cyrano
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  • Registered: 2015-04-28
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Re: UFX+ make small noise on all input with 176/192k sample rate

It probably means you have a noise source in your room that's over 24 Khz, but below 96 kHz.

To "measure" what your inputs are doing, you should connect a 200 Ohm resistor on the balanced inputs. Open inputs usually find something to show as noise.

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  • Jeff
  • Jeff
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Re: UFX+ make small noise on all input with 176/192k sample rate

This is expected, the meters here are not band limited so you'll see a higher noise floor when set to 192k, due to noise shaping in the A/D converter chip. As Cyrano said, the noise is at a higher frequency than your system can reproduce, so no real problem.

Regards,
Jeff Petersen
Synthax Inc.

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4 Reply by MC

  • MC
  • MC
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  • Registered: 2007-04-06
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Re: UFX+ make small noise on all input with 176/192k sample rate

Also explained in the manual, chapter 40.7, Noise level in DS/QS mode.

Regards
Matthias Carstens
RME

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