• Registered: 2020-04-12
  • Posts: 5

Topic: ADI-2 DAC USB Bit rate and Clock rate

Apologies if this has been answered somewhere on this board before.

I just received my ADI-2 DAC and installed the Windows Driver from the official RME site to my Surface Laptop (Windows 10)
I am not able to see the icon in the notification area anywhere after the installation was over (it's not in hidden mode).
I do however see the ADI-2 DAC's properties box when I right click on my windows loudspeaker icon.

My settings in the properties box are set to 2 Channel, 24 bit, 44100 Studio quality (the highest option).
The DAC state overview shows: USB Conn 44.1 / State 2/2

However my Amazon Ultra HD streaming software indicates following stats:

Track Quality: 24 Bit 96 kHz
Device Capability: 24 Bit 44.1 kHz
Playing at: 16 Bit 44.1 kHz
Am I missing a setup step somewhere in order for the Amazon stream to be played in its full quality at 24 Bit 96 kHz?

Thanks much for your time and help.

2 Reply by MC

  • MC
  • MC
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  • From: Germany/Thailand
  • Registered: 2007-04-06
  • Posts: 24,835

Re: ADI-2 DAC USB Bit rate and Clock rate

The icon needs a reboot to be shown. Amazon Ultra HD can not switch sample rates. Rumours say next version 7.11 might have Windows WDM  Exclusive mode support, then it might work.

Regards
Matthias Carstens
RME

MC's Website

  • Registered: 2020-04-12
  • Posts: 5

Re: ADI-2 DAC USB Bit rate and Clock rate

Thanks for your quick reply Matthias. I managed to find the icon, I had my 'show all notification icons' turned off. Thanks

I am however still confused regarding amazon. When I playback an HD amazon file using just my laptop it shows me in the stats that it is resolving it as 24 bit 48 khz. After connecting the RME ADI-2 via USB the stats window now shows me 16 bit 44.1 khz.
My XDUO Dac shows a 24 bit 96 khz reading. Do you still consider the WDM mode support to be the issue? Is this exclusive to the ADI-2 DAC?

I have attached some screen shots to help clarify my findings

Playback of amazon file through Surface laptop only:

https://www.live4ever.uk.com/wp-content/uploads/2020/04/laptop-playback-scaled.jpg

next page

  • Registered: 2020-04-12
  • Posts: 5

Re: ADI-2 DAC USB Bit rate and Clock rate

Playback with ADI-2 via USB

https://www.live4ever.uk.com/wp-content/uploads/2020/04/RME-amazon-scaled.jpg

next page

  • Registered: 2020-04-12
  • Posts: 5

Re: ADI-2 DAC USB Bit rate and Clock rate

RME ADI-2 Properties

https://www.live4ever.uk.com/wp-content/uploads/2020/04/properties.jpg

Thanks again for your help

Paul

  • Registered: 2020-04-12
  • Posts: 5

Re: ADI-2 DAC USB Bit rate and Clock rate

update:

After another reboot I was able to set the sampling rate to 96 khz and with that the bit rate to 24 bit.
Amazon now shows 24 bit / 96 khz in the playback window for the file posted above. I'm assuming the ADI -2 is now up-sampling any Windows USB sourced stream to those rates.

I'll be patient for Amazon hopefully to have the new update include switchable rate with exclusive modes.