HifiBerry Digi+ with Ropieee

Core Machine (Operating system/System info/Roon build number)

2011 MacMini

Network Details (Including networking gear model/manufacturer and if on WiFi/Ethernet)

Over wifi

Audio Devices (Specify what device you’re using and its connection type - USB/HDMI/etc.)

HifiBerry Digi+ with Ropieee into a Denon Receiver

Description Of Issue

No issues playing anything directly off the MacMini in my main system. Aux system in a different room fed by the HifiBerry over wifi has no sound on certain Tidal songs/album… The timeline scrolls but no sound. It mainly happens on MQA titles. Trying different device settings (including the default) seem to have no impact. How can I track down the source of the problem?

Example of MQA albums that has no sound every time I try it:


image

MQA examples that do work:


image

Device setting example:


Changing to no MQA does nothing.

Ideas?

Hi @Jeremy_Lucas,

Can you please share a screenshot of your Signal Path when playing one of the problematic albums?

Is there any way you could temporarily hook up your Denon receiver to the Core (USB/HDMI), bypassing the HiFiBerry and verify if the issue is the same?

Does not play path:


Plays path:

Swapping things around … maybe. Not so easy as the Denon is an older AVR3802 so it has no HDMI inputs which how I’m currently going out of the Mac Mini. I’ll have to see if I can find a compatible digital output/input between the 2, that I can’t probably mess with until the weekend. I have an external DAC I use for my headphones that I can easily try in the Aux room instead of the Denon. (either way power is from a dedicated Adcom amp, not using using the internal amp in the Denon)

Hi @Jeremy_Lucas,
It appears that the non-working signal path is MQA 88.2 content. If you upsample this content to 96kHz, does it then work as expected? You can upsample it by using the DSP engine -> Sample Rate Conversion: https://kb.roonlabs.com/DSP_Engine

That is old tech. Sometimes they did not support multiples of 44.1. Did you check the manual and verify it can do 88.2?

Noris, upscaling the 88.2k to 96k works. However that doesn’t really explain why one 44.1k track works and one 44.1k track does not in the examples I gave above. Scaling the one 44.1k track that does not work to 96k also works.

Some DACs could not do multiples of 44.1. I have several that cant do 176.4, for example.

that doesn’t explain why one 44.1 track works and another 44.1 does not

@Jeremy_Lucas - Are you using the latest version of Ropieee?

image used: rpi234 downloaded 12/29/2019

from the Pi:
image

Hi @Jeremy_Lucas,

Can you please try playing a few 44.1kHz/88.2kHz MQA tracks in succession and note the exact local time + date + track of ones that don’t work vs one’s that do work? I am looking for something like this:

Played Dark Side of the Moon 44.1kHz/88.2kHz MQA at 6:07PM on 1/30/20 and it didn’t play properly
Played Kind of Blue 44.1kHz/88.2kHz MQA at 6:09PM on 1/30/20 and it worked properly

Once I have this info I can take a look for any additional clues in diagnostics.

Ok, it won’t happen until the weekend though.

1 Like

No worries @Jeremy_Lucas, when you have a chance to look this over do let me know the above info.

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