Might be too early a report and static might come back after lengthier listening sessions but it seems I have solved the issue by setting PLL ON on the May. Makes sense, doesn’t it ?
My May and Red are constantly ON, the fact that continuous tone issue was solved (need more time to confirm it’s solved too or if it’s a different issue) by switching ON/OFF the Red might also come from a precession of May’s clocks too, no ?
This doesn’t/shouldn’t apply for May USB input. So I don’t know why it would be relevant…
INDEED . once again you’re right, static is back. Maybe you’ll find the cause in the log I sent you
Have you tried playing music directly from Mac, just skip HQplayer. Play Apple Music. If not static then something wrong on config
This has nothing to do with hqplayer, but… I noticed the other day with my nvidia shield, on some episodes, if I put the may in OS DSD over sampling mode i get static between episodes of the blacklist when I push the next episode button.
The chain is:
nvidia Shield → tv (hdmi)
tv → holo may (toslink)
It doesn’t happen in NOS or OS PCM mode.
static occurs only with SDM 1024 ; interrupts, loss of naa connection and continuous tone occur with maximum USB output (PCM 32 x SDM 1024). No such issues at lower rates. Hence nothing to test directly from a Mac
Have you shared a screenshot of your configuration, just to see if anything that might be causing the problem.
I am in need of some info…
I just got a new pc today and installed ubuntu on it. I am looking to stress test with hqplayer. I am sending to an akm based rme dop 256. The load average is 0.02, so its not remotely breaking a sweat. This was using the default settings in hqplayer.
For both dsd and pcm, what settings can I use to really put this through its paces? Filters, etc. Want to make it work hard to see what it will have trouble on.
You can have some more load by having convolution based room correction plus some parametric EQ for DSD256 source with output at DSD256.
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Hello @jussi_laako
which DAC Bits Setting would you recommend for PCM Upsampling with my Chord Mojo 2?
Thanks for your help 
Best
Dominik
Since the Chord DAC will apply DSP to the input, it is best to provide highest possible resolution material for the DSP. If you use S/PDIF, then it should be set to 24, since that is maximum S/PDIF can pass (most DDC claim 32-bit, since that’s what they use on the USB for efficiency, so it is important to set it correctly). With USB you can leave it set to “Default” which should result with 32-bit output.
TDPF or Gauss1 dithers are good choice. But also NS5, NS9 or LNS15 can be used if desired.
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I am using a mac M4 as roon server and loaded hqplayer on the same machine. A LHY pi-based machine runs gentooplayer and it links to a Holo red running Gentooplayer via an ethernet cable. The Holo red is in pure Diretta target mode. Holo connects to my dac (dual ess 9039pro) using i2s via hdmi cable.
For the longest time I upsample to dsd512 (the max for my dac), and use asdm7ec super, and sinc short.
Recently I played some native dsd64 files and they sounded wonderful. Using the native dsd64 as a reference, I found that the most lively and stressfree sound happens when I upsample to dsd128, and use poly sinc gauss long and asdm7ec super.
In my system, asdm7ecv3 is not as good as the super version. And sinc short or sinc medium or going beyond dsd128 actually makes the sound less natural and less lively. I realize that when I do not have a proper reference, I find it hard to tune the system right.
Please note that poly-sinc-gauss-long doesn’t apply to DSD sources, only to PCM sources. So please don’t believe what Roon signal path display claims (it’s been buggy for years and Roon has not fixed it). Instead please check what HQPlayer Client (or the server) says… Current default for DSD sources would be FIR2/XFi.
This is technically also the case, ECv3 is last of the older modulator series. -ul/light/fast/super are the new generation. So makes sense…
Please note though, that playing DSD64 as-is has it’s own technical issues. So the reference is only presentation of DSD64 your DAC is able to give you within the technical limitations of DSD64…
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