Hi, folks. Could someone explain the below?: [Screenshot 2025-10-02 at 2.15.12 PM] Note that all extra processing is disabled, including sample rate conversion, yet Signal Path is showing bit-depth and sample-rate conversion taking place. I’m running Roon client on macOS Tahoe, the server is on …

[image] Macbook pro 2021 Roon app Tidal streaming max 48 kHz Support You are using the OS mixer. If you go to Roon > Settings > Audio, and enable CoreAudio for the Mac. This will provide bit perfect output.

Thank you, @Suedkiez . Here is my Audio settings: [Screenshot 2025-10-02 at 3.48.18 PM] How do I enable “Core Audio” for the Mac? Btw, I tried enabling Bose USB Audio (listed as CoreAudio), same thing on Signal Path, no change.

CoreAudio should be all the devices labeled as CoreAudio, I suppose. But I think the post I linked to may be inapplicable or old or something. Sorry, not a big direct output guy myself, I relied on @mjw who is nearly always right :slight_smile: I checked now on my Mac and my device, just the MacBoo…

Source sampling rate doesn’t seem to matter. I used a simple CD Audio 44/16, and it’s being upsampled from 16-bit to 64 (then back to 24), and 44.1kHz to 48 (as presented on the original pic). I need to figure out how to disable all that processing.

[image] xred: and it’s being upsampled from 16-bit to 64 (then back to 24) That’s normal before any other DSP conversion is made. By expanding to 64 bits first, the mathematical conversion errors are minimized and pushed out of the audible range. However, if starting, e.g., with a 192/24 fil…

ok, I tried enabling “Macbook Pro Speakers” and sure enough no conversion. But… Internal MacBook speakers aren’t very good to play music, as we all know, so I don’t want to use them for that purpose. Can I use my Bose speakers and play FLAC as it is with no conversion?

[image] xred: ok, I tried enabling “Macbook Pro Speakers” and sure enough no conversion. Good, so that proves that there is no big underlying issue. [image] xred: Can I use my Bose speakers and play FLAC as it is with no conversion? Depends on what the device can accept. What model is…

They are super old speakers, but good. When enabled here is the signal path: [Screenshot 2025-10-02 at 6.52.48 PM] The processing upsamples 44.1/16 into ultimately 48/24, so if the speakers can take 48/24, why can’t they take the original 44/16?

It would be so much easier if you just stated the model and we could look up its capabilities in the spec. If the device can only accept 48 kHz, then the 44.1 needs to be upsampled. It’s quite likely that - like many other streaming speakers - it converts everything internally to 48/24 anyway, eve…

I have Bose Companion 5 Multimedia Speaker System connected to my late 2021 Macbook Pro. Had it for probably 15 years. 328138_og_companion-5-multimedia-speaker-system_en.pdf 616.76 KB I can’t find anything in the manual of the web related to its audio resolu…

Signal path / digital processing

Roon Software Discussion

AndyR (Andy) October 4, 2025, 8:40am 16

Probably just for interest…

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