Router->Sonore Optical Rendu and Optical Module Deluxe via ethernet cable->Audiowise SRC-DX via USB->Chord Mscaler via 1X BNC cable->Chord DAVE via 2X BNC cables
Number of Tracks in Library
5000 tracks
Description of Issue
Pops and clicks when changing to a track with a different sample rate versus the one currently playing. Have tried using resync delay but it only helps mitigate the issue.
Without the Audiowise in the chain, there are still some pops and clicks when changing to a track with a different sample rate (which had never happened before);
Putting the SRC-DX back in, the pops and clicks last for a second longer. Adding resync delay helps mitigate that but it is far from ideal.
Bill_Janssen
(Wigwam wool socks now on asymmetrical isolation feet!)
7
Pops and clicks usually indicate that some processor somewhere in the chain isnât keeping up â packets are being dropped. I would guess that itâs either the network (router), Optical Rendu, or the SRC-DX.
Thatâs quite a chain. Why use two scalers in series?
Iâd try connecting the DAVE directly to the Rendu via USB to see if the problem goes away. If so, itâs one of these scalers thatâs the bottleneck.
The whole idea is to take the Mscalerâs noisy usb input out of the equation.
I never used to have anything like that prior to adding the SRC-DX but, as above, having removed it I still get some pops and clicks but slightly less easy to perceive.
I started using the SRC-DX again afterwards and the annoying pops and clicks came back.
Iâve had similar problems with various endpoints (wired and wireless) and solved it by setting the max sample rate at âUp to 96kHzâ for problematic endpoints. Not ideal IMO but it works (having audible music at a lower rate is better than inaudible at native rate), and worth trying if you havenât yet.
I will try that but it is plain odd that this is going on in the first place.
I have been using my Optical Rendu and Modul Deluxe for around 6 months without a single problem.
Something must have changed in the meantime and I would have hoped that Roon is able to help troubleshoot this. There are quieter pops and clicks without the SRC-DX and more audible ones with the SRC-DX.
My router is the same, as is my network and everything else in the chain.
Bill_Janssen
(Wigwam wool socks now on asymmetrical isolation feet!)
11
Yeah, I donât think Roon is going to get involved. Unless you can narrow it down. There are too many suspects here, and none of them are Roon. Youâve got a small library on an i5 Core machine; canât imagine the Roon software is being stressed much. What kind of loads are you seeing on that machine?
Bill_Janssen
(Wigwam wool socks now on asymmetrical isolation feet!)
13
What makes you think the SRC-DX USB implementation is good? The issue with this happening with sample rate changes makes me remember the XMOS U208 issue from a couple of years ago. If I remember correctly, the problem was that some XMOS sample code was used blindly by some DAC manufacturers who didnât realize it didnât cover all the cases of their USB input design.
A comment I got from the Chord group on Facebook about this issue:
I had a massive pops and clicks issue with all streamers I tried when using Dave with mScaler. It is a reason for me not to go down the mScaler path, which is a shame because the sound improvement is superb. A friend of mine sold his Dave and mScaler combo for that reason, the popping and clicking was unbearable for him.
Bill_Janssen
(Wigwam wool socks now on asymmetrical isolation feet!)
15
Ah! Well, thatâs too bad.
Bill_Janssen
(Wigwam wool socks now on asymmetrical isolation feet!)
16
Ive had this very problem with a Trinnov/Meridian system for the last 2 years ! Roon thinks it can play songs of any clock rate ( which it should as the Trinnov is âRoon-Readyâ) but the pops , clicks and thumps emanating from the speakers are horrible . Very tempted to dump the gear and just buy a nice car and post-Covid holiday .
I have seen this sort of comment all over the place since I posted on headfi and Chordâs facebook group asking for advice. Being a lifetime member, I kinda hope that Roon at the very least offer to look into this further.
Bill_Janssen
(Wigwam wool socks now on asymmetrical isolation feet!)
20
Does plugging the DAVE directly into the Vortexbox via USB help? Thatâs a competent DAC with a honking FPGA chip â maybe it doesnât need external help.