Hi All,
Setting up a new Mytek Liberty in my Windows 10 based system. I have it setup in Roon and HQ Player. I am having a heck of a time setting up the MQA for the DAC. No matter how I setup the DAC it only decodes MQA to 96Khz, even if the file is 192khz MQA. I currently have it setup as “No MQA support”, but even when I select Decode or Render or Decode and Render, it only decodes to 96Khz. I imagine I am setting something up incorrectly. Here are my setup screens:
Thanks!
Hi,
MQA decoding (aka unfolding) is always to double rate … after that it is down to a MQA aware DAC to render the stream back to the original sample rate.
Setup Roon to match the capabilities of you DAC.
That said, I see you are routing via HQPLAYER and using it’s DSP function as this does not preserve the MQA signal… the best you will get from MQA is double rate.
Hello @John_Hill,
The MQA Core Decoder unfolds MQA content to its 2x rate, either 88.2 kHz or 96 kHz. For unfolding to higher sample rates as well as DAC specific management, your DAC must complete the MQA Rendering process.
MQA Rendering relies on the MQA signaling information to be passed to the DAC in a bit-perfect manner. Using HQPlayer to resample the audio to DSD will cause the MQA Rendering information to be lost.
According to your screenshot you posted, it seems everything is working as it should. Roon is unfolding the MQA stream to 96kHz, and then passing the hi-res stream to HQPlayer for further DSP processing.
-John
Are you sure about this?
The Mytek is working properly now in Roon and HQ Player. It appears from me from the post by John above (“…then passing the hi-res stream to HQPlayer for further DSP processing”) that once the MQA processing unfolds and decodes the stream that it passes THAT hi-rez signal on to the DAC. Once the signal is decoded, why wouldn’t that go to HQP?
After proper setup of the Liberty, Roon clearly shows the decoded hi-rez signal going to HQP.
Hi John,
I didn’t say it wouldn’t… the unfolded double rate MQA signal is obviously passed on to HQP… however, if a HQP DSP function is then applied, the imbeded MQA signaling that is need by a MQA DAC to apply MQA rendering will be destroyed… thus the processed audio stream can’t be considered as MQA anymore…
Putting it another way … the input into HQP from Roon still contains MQA data, but the HQP does not use it, and the DSPed output from HQP to the DAC is no longer a MQA signal.
I’m not saying anything is wrong, just describing the transport path though the devices/systems and what it does to any imbedded MQA signalling.
As an aside unlike HQP, if Roon’s DSP engine is used … it preserves the MQA signaling so it’s still possible for an MQA DAC to apply MQA rendering.
Closed due to inactivity. If you are still seeing this issue, please open a new support thread.
