Distortion when streaming via Bluetooth from Audirvana

[MediumRare]

I’m having noticeable distortion while streaming via Bluetooth from a MacBook to my new DX7 Pro DAC. See the attached files for FR at 1 khz via USB (no distortion) and BT (obvious distortion). The distortion is basically the same frequencies (not harmonic) when tested at other input frequencies. I also don’t have this problem via Bluetooth using YouTube - only Audirvana. I have also tried turning off my Wi-Fi router and Wi-Fi on my laptop: No change. I have the latest Audirvana 3.5.24 (3554). It’s upsampling 16/44.1 to 24/48 and I have no options to change it. Thanks for your ideas.

 

[Tks]

Could this be a case where the upsampling process is causing an issue? Or simply Audirvana itself?

 

[MediumRare]

Could this be a case where the upsampling process is causing an issue? Or simply Audirvana itself?

I don't know. I haven't seen an option to change that setting within Audirvana. Maybe there is a setting in the DX7. I can't look until the weekend so if anybody know would be helpful.

 

[Berwhale]

Have you tried changing the Bt codec that the Mac is using? https://www.macrumors.com/how-to/enable-aptx-aac-bluetooth-audio-codecs-macos/

 

[MediumRare]

Have you tried changing the Bt codec that the Mac is using? https://www.macrumors.com/how-to/enable-aptx-aac-bluetooth-audio-codecs-macos/

Great tip, I'll try that, thanks!