Hello
Happy New Year 2026, filled with health and music!
I have an Eversolo A6 streamer connected via USB to a Cyan2 Holo DAC.
The Cyan2 performs better when upsampling to DSD.
I can only output DSD256. What would be the best settings for SoX or r8brain?
Thank you for your help.
Welcome…
I suggest r8Brain… You will need to experiment… be aware that very small incremental adjustments make big changes in sound-quality output… the more you know about filter design the better you will be able to refine the output.
Thanks for your reply.
Which filter do you think I should start with ?
Linear…
Is this the phase adjustment?
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Mitch Barnett has a graph showing what those adjustments do at HLC Plugin - Accurate Sound he uses the same r8Brain resampler… Bottom, left hand side of page…
@Matamboy
To expand for you, in concert with the graphic that @Ddude003 points to…
I modulate all PCM files to DSD256 using r8Brain… The screenshot below is of my settings that are specific to my playback system… A good place to start, but you will most likely need to tweak the parameters for your aesthetic in the context of your playback scenario… Note the dialog regarding the DSD Sigma-Delta Modulation Filter Type considerations… Experiment.
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What computer platform and Operating System are you using?
Are you actually able to transmit via UPnP, raw native DSD files or DoP files from Audirvāna for USB playback on the Cyan 2 ?
The DMP-A6 uses the ESS ES 9038Q2M chipsets that do not provide a pure 1-bit PDM (DSD) signal-path to a simple low-pass filtered D/A circuit for output… ESS chipsets are PCM-centric and decimate all DSD signals a high sample-rate PCM signal for DSP processing in the Hyperstream II DAC architecture, ultimately producing a high sample-rate multi-bit “DSD-Wide” signal for output…
The HDMI output of the A6 supports DSD64 multi-channel and PCM 192kHz multi-channel…
Because the ESS chipset decimates all DSD sample-rates to PCM, I suggest that you convert all DSD files to PCM in Audirvāna, so to offload the decimation DSP from the ESS chipset, which will reduce the intrinsic noise (jitter) in the DAC platform.
I suggest that you use ‘Power of Two’ up-sampling strategy for all PCM files , so to produce the logically correct sample-rate result, (705.6kHz or 768kHz) sent to the Cyan 2.
You will need a different Streamer that produces raw native DSD or DoP transmitted DSD files to take full advantage of the Holo platform’s 1-bit DSD architecture playback capability.
Hello,
I use GentooPlayer on my laptop. In Audirvana’s audio settings, I’ve set A6 Dop DSD over PCM 1.1.
However, what is the Cyan 2 displaying as the format it is receiving on the USB interface ?
Are you getting playback from Audirvāna?
When I play a 16/44kHz file with Audirvana set to DSD256 upsampling, it displays DSD256 on Cyan2, but 705.6kHz on A6.
Okay… However, it is not clear on which platform the DoP/DSD signal is being extracted… Obviously, the 24/705.6kHz is the PCM carrier file for DoP transmission of the 1-bit 11.2MHz PDM (DSD256) file… It would be interesting to get some insight from the Eversolo folks about the signal-flow to the USB output.
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