Motu UltraLite-mk5

[John_Warden]

@grizaudio

@John_Warden

I’ve just submitted the support request: MOTU UltraLite-mk5 and Linux on Raspberry Pi 4: noise on unused channels

John, do you get noise on unused channels with wind10? I suspect not? But would like to confirm.

Confirmed - no noise with W10.

Also you mention above you run the Motu at a fixed rate, I suspect this is to minimise sample rate change clicks and pops? with Linux.

Is a fixed rate required when using with Win10/Roon for instance? or will the Motu switch sampling rates as the sampling rate on source music changes?

The MOTU is a prosumer audio card, and runs at a fixed rate by design. This applies in every context irrespective of the host device operating system.

EDIT: It appears I was misinformed and this is incorrect. The UL5 does adjust its sample rate as @grizaudio reported later in this thread

I run at 192kHz and it sounds good whatever the original source rate is. I used to upsample to max power of 2 with my previous stereo DAC, and I’ve not noticed any downside, although I’ve not done any specific testing to see if, for example, 44.1kHz sounds better at 176.4kHz rather than 192kHz.

To change the sample rate you have to access the control interface using the MOTU software, CueMix 5. From my perspective that’s impractical, since I just want to set a playlist and relax! Who doesn’t?!