HQPlayer Embedded Discussion [2021-2022]

Just change HQP output mode to SDM and tick “DoP” box?

Do a DSD128 rate with ASDM7 , poly-sinc-short-lp

Just use your existing HQPlayer setup? Configure HQPlayer to output DSD256 over DoP instead of 705.6k PCM…

So this is now what I’m doing, here’s the signal path:


Here’s a screengrab of my config:

It’s all working (much harder than it was for PCM), let me know if there’s anything else I can do to test more @dabassgoesboomboom as well. Thanks for the input both.

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Harder on CPU load you mean?

Or harder ticking two extra boxes :grin:

If you have no dropouts with DoP you can safely assume chain from HQP to DAC is bit perfect

Are you using Mojo to drive headphones?

Don’t have the volume too loud - as you change tracks and sample rates you may get a blast of white noise soon…

Classic Chord with ALSA it seems

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That’s the one, my system’s now 15% loaded, but memory use is super lean so no problems.

Absolutely none so far and am a few tracks in. The trial license thing will stop me soon enough.

Yes I am and the white noise horse has bolted, no harm done though.

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I suggested DSD128 rate for half the CPU load.

This not a long term thing for SQ, just troubleshooting for dropouts

No dropouts, no worries

Ha classic Chord. You’d have the same issue with a Dave anyway.

Even Mojo 2 I see user reports of same

Try a Windows 10 NAA with Chords proper ASIO driver if that helps

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Not while I have my strength :joy:

Seriously though, thanks for the help

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Hilarious, I had this attitude to Windows until I recently experienced ASIO driver performing better with an iFi DAC (not SQ, actual performance).

I setup a little fanless UPBoard as Win10 NAA.

These days Microsoft has an official Remote Desktop app on macOS. I can fully sign in remotely. No keyboard/monitor/mouse at all. And shutdown remotely.

I setup my router to block that UPBoard’s internet access, so no Windoze updates to ever worry about. Unless I want to manually do it.

I wonder if Chords ASIO driver behaves much better, if its worth a try. If that results in no white noise and you can enjoy your favourite sinc filter, maybe something for later :smiley:

I really like this headless operation though and its using Microsofts app on macOS. No funny 3rd party business.

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Actually @jussi_laako’s idea of testing DSD256 DoP is better.

Strain the entire chain with the same bandwidth that PCM705k would.

Better bit perfect test.

Note to self: always do what Jussi says :grin:

The Docker thing is just a test really. This guy gets tagged soon, but he’s team Linux.

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Fancy model !

Fancier than my little 5Vdc Intel Atom Gateway model

Eventually happens with my Mojo no matter what is the source. iPhone with CCK, Spotify on Windows, anything… Depends mostly on USB cable how soon it happens. But it will. I got tired of it and have not been using my Mojo for anything since.

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I think @killdozer is keen on Mojo2, which features the PCM768kHz coax input.

He can add this and then won’t have white noise with PCM768kHz sinc filters - still cheaper than M-Scaler:

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The only model that they had, but still a normal price and I jumped before the silicon dried up. They’re a long lead time now.

I’m not thinking MoJo 2 but one of those looks like it would get along quite nicely with the Qutest + HQP downstairs.

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From where?

Some European supplier, through mouser I think.

Ah yeh, long lead time from mousser.

They are shipping quickly from UP’s official web shop though.

I bought my 2nd a few weeks ago, shipped within days.

@Fernando_Pereira just had one arrive recently too.

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I’ll find a use for it, or so I figured. Am likely to turn it into a custom Linux box of some kind downstairs and it kind of matches the passive NUC case. Out tomorrow so that’s a Sunday or next week game.

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Yes, ordered mine on Jan 28, arrived to the destination in California Feb 7. I put an Intona isolator between it and my Holo May. HQPlayer runs on a dedicated server (i9-11900, Noctua cooling, …). I’m using 1x Filter: poly-sinc-gaus-xla, Nx Filter: poly-sinc-gaus-hires-lp, modulator: ASDM7ECv2, DSD256 output. Source material is always PCM, various sample rates. The sound is among the best I’ve experienced, very comparable to our Linn Klimax Organik speaker setup (which also involves, internally, careful upsampling and modulation followed by a highly engineered discrete D2A stage).

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This is a new release by a major popular artist. 24/88.2k on Qobuz and Apple Music.

A very suspicious quick drop even before 22kHz.

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