Which HQP Filter are you using? [2023]

Audio Gear Talk HQ Player
884

However, I encounter a specific problem on a particular song, it’s as if I had clipping, it always happens in the same places.
However, I have -3DBS on the volume (I tried to go down again but same result).
On the other hand, if I check “20KH Filter”, no more sound output on this song (all DSD), however the songs in PCM are played normally.

Audio Flux Roon on this song

Capture d'écran 2023-11-04 152450
Capture d'écran 2023-11-04 152450708×748 53.1 KB

Is there a way to resolve this problem? Pipeline problem? When I applied the convoultion settings on Roon and not HQP, I didn’t have the problem described…

885

What CPU model?

GPU? What GPU model?

Convolution with DSD source could be causing dropouts not clipping

886

What CPU model?
roon Core I5, HQP Player Mac Mini M2, Naa I3

GPU? What GPU model?
No specific GPU

887

Convolution with DSD source might be your issue here.

Especially if you disable Pipeline Matrix and everything works ok

What if you output DSD128 instead? Just as a test

Is it room correction you are doing?

888

The weird thing is that it’s on one track (DSD64). The other DSD tracks 64, 128 and even 256 there is no problem.

889

Ok then I guess it is something else then.

890

I think L is “Limited” counter. And A is “Apodizing” counter.

Essentially, if L increments, you volume is too high. If A increments, you should be using apodizing filter (if you already are, you are fine).

1 Like
891

Some tracks could be overmodulated and violating DSD specs. If you want, you could share that track over email and I can check what could be the reason.

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892

Ok.
File send by Wetransfer.

893

I removed this problem by changing from Dop to none.
On the other hand, I read at 705/32 bits and 768/32 bits instead of DSD/1bit.
I’m still in SDM.
No more reading problems now.
Can this impact the output quality?

894

Can you explain a bit more about this, screenshot maybe?

895

with problem
OUTPUT DOP

HQP DOP
HQP DOP886×451 43.8 KB

896

without problem
OUTPUT NONE

HQP NONE
HQP NONE885×385 42.8 KB

897

The latter one is with PCM output… DSD converted to PCM.

One likely issue is that with IIR2 integrator your Mac is running out of steam. So you could try switching to FIR2 integrator instead.

With ADI-2, you need to use DoP to do DSD output.

898

Indeed, I have to be in DOP for DSD.
I have all the possible filters one by one and therefore FIR, but still the same problem.
Were you able to watch the track in question?
Is staying in PCM 705 or 768 much detrimental compared to DSD?
I don’t understand why when my convolution was on Roon and not HQP, there was not this problem.
The CPU load of the Mac Mini is not saturated with IIR2 (around 40%), moreover there is no big difference when I put the other filters (FIR included).

899

I’m looking into it. I do get glitches playing it yes…

900

ok, that finally reassures me :slight_smile:
So that would tie in nicely with that particular track.

901

Apart from this track problem, I am considering replacing my current DAC (RME ADI2 AKM version) with a T+A DAC200.
It seems to me that this DAC has good feedback.
I would use it with its preamp (like the RME) to power active speakers (ATC 20A PRO).
I believe you have (or had) this device.
Do you think this would add significant value to my audio system?
In fact, the price difference is still significant.
What settings would you recommend for this DAC?

902

Yes, it would be nice for your purpose. Bit-perfect DSD DAC with analog volume control. And you will get very detailed sound.

If you can get a demo loaner it would be best, you could give it a listen.

One of the ASDM7EC modulators, DSD256 or DSD512, filter of your choice. Set the DAC’s analog filter to 60 kHz.

Yes, I have it in my living room system. Along with Marantz SA-12SE, Ferrum Wandla and Accuphase DAC-60.

1 Like
903

What filters do you prefer for the Accuphase DAC-60 @jussi_laako ?