# ProUSB DSD 512 Not Working **URL:** \ **Category:** General\ **Created:** [December 19, 2024, 7:49pm UTC](https://forum.msbtechnology.com/t/prousb-dsd-512-not-working/445 "2024-12-19T19:49:51Z")\ **Posts on this page:** 19\ **Page:** 1
**Author:** ![catastrofe](https://avatars.discourse-cdn.com/v4/letter/c/a6a055/32.png) [@catastrofe](https://forum.msbtechnology.com/u/catastrofe)\ **Post date:** [December 19, 2024, 7:49pm UTC](https://forum.msbtechnology.com/t/prousb-dsd-512-not-working/445/1 "2024-12-19T19:49:51Z")
I received a loaner ProUSB/ISL from my dealer yesterday and installed it in my Discrete DAC. My system path is: Mac/Roon \> Ethernet \> Sonore Rendu \> ProUSB /ProISL I have firmware 23.14 in the Discrete which allows for 8X DSD (DSD512), and I have it enabled in the menu system. I believe the firmware in the ProUSB is 2.1 (when viewing output devices in HQ Player it shows “ProUSB XEF V2.1” The Rendu is capable of DSD512. Neither Roon nor HQ Player recognize that I have DSD512 capability. In Roon/Audio/Device setup, the maximum setting available is DSD256. In HQP, I can set my preferences to DSD512, but it downsamples to DSD256. The display on my Discrete shows “DSD 4X” when playing DSD512 whether straight from a file or upsampled in HQP. Can someone assist? ---
**Author:** ![Dan](https://yyz1.discourse-cdn.com/flex003/user_avatar/forum.msbtechnology.com/dan/32/39_2.png) [@Dan](https://forum.msbtechnology.com/u/Dan)\ **Post date:** [December 19, 2024, 10:11pm UTC](https://forum.msbtechnology.com/t/prousb-dsd-512-not-working/445/2 "2024-12-19T22:11:37Z")
I don’t use HQPlayer but I’m pretty sure it has, independent of what kind of processing you ask it with do, a setting that limits its maximum output rate. It should be set to 11289600 Hz if you don’t want DSD512 downsampled. If this doesn’t work go to [community.roonlabs.com](https://community.roonlabs.com) an ask about how to get HQPlayer to output DSD512 (in the Audio Gear Talk/HQPlayer category). Jussi (designer of HQPlayer) hangs around there and is pretty quick to answer questions about HQPlayer. Dan ---
**Author:** ![catastrofe](https://avatars.discourse-cdn.com/v4/letter/c/a6a055/32.png) [@catastrofe](https://forum.msbtechnology.com/u/catastrofe)\ **Post date:** [December 19, 2024, 10:21pm UTC](https://forum.msbtechnology.com/t/prousb-dsd-512-not-working/445/3 "2024-12-19T22:21:17Z")
Thanks Dan, but HQP isn’t the issue. Even in Roon, the maximum DSD rate is 256. ---
**Author:** ![catastrofe](https://avatars.discourse-cdn.com/v4/letter/c/a6a055/32.png) [@catastrofe](https://forum.msbtechnology.com/u/catastrofe)\ **Post date:** [December 19, 2024, 10:25pm UTC](https://forum.msbtechnology.com/t/prousb-dsd-512-not-working/445/4 "2024-12-19T22:25:50Z")
Here’s a screenshot from within Roon showing the Rendu and ProUSB device setup, along with the DSD rates I can choose from. ![Screenshot 2024-12-19 at 3.24.17 PM](https://canada1.discourse-cdn.com/flex003/uploads/msbtechnology/original/1X/920e9ab9cdaba8e402a96ce64b093cb08247e5f9.jpeg) ---
**Author:** ![Dan](https://yyz1.discourse-cdn.com/flex003/user_avatar/forum.msbtechnology.com/dan/32/39_2.png) [@Dan](https://forum.msbtechnology.com/u/Dan)\ **Post date:** [December 19, 2024, 10:55pm UTC](https://forum.msbtechnology.com/t/prousb-dsd-512-not-working/445/5 "2024-12-19T22:55:27Z")
Interesting. I use ProUSB to connect (directly via USB) my Nucleus to Cascade and I it does play DSD512 tracks at DSD512. ![CleanShot 2024-12-19 at 17.40.01@2x](https://canada1.discourse-cdn.com/flex003/uploads/msbtechnology/original/1X/d00be67be03dab8f173720533aa828f70b822070.jpeg) The Cascade says it is playing “512x DSD”. I know the screen shot says it is a Select DAC, but I think because the Cascade isn’t listed on the Roon partner site so it just masquerades as a Select. 😀 ![CleanShot 2024-12-19 at 17.42.14@2x](https://canada1.discourse-cdn.com/flex003/uploads/msbtechnology/original/1X/65c1ca6a841e27eb4690318c76d57391dc507eda.jpeg) The setup screen for the Cascade USB input looks different than yours. Yours looks like the setup screen for the (Roon Ready) Renderer, i.e. Ethernet, input on the Cascade. The Renderer is not capable of doing DSD 512 My Renderer Roon setup screen ![CleanShot 2024-12-19 at 17.54.01@2x](https://canada1.discourse-cdn.com/flex003/uploads/msbtechnology/original/1X/73b691a33f7dbc399e1b8406e34db377775e8a07.jpeg) It looks like, for whatever reason, your Roon sees Discrete DAC+Ethernet and concludes it is sending data to the MSB Renderer… ??? A signal path screenshot might yield some more clues Dan ---
**Author:** ![catastrofe](https://avatars.discourse-cdn.com/v4/letter/c/a6a055/32.png) [@catastrofe](https://forum.msbtechnology.com/u/catastrofe)\ **Post date:** [December 19, 2024, 11:26pm UTC](https://forum.msbtechnology.com/t/prousb-dsd-512-not-working/445/6 "2024-12-19T23:26:40Z")
Thanks for the info. My previous screenshot shows that Roon sees the Sonore Rendu, and separately, it sees the ProUSB as they’re both listed. If I enable the V2 Renderer in Roon, the setup screen looks like this: ![Screenshot 2024-12-19 at 4.21.45 PM](https://canada1.discourse-cdn.com/flex003/uploads/msbtechnology/original/1X/1bb57e5fd7c0b13239560c28156200f002b2aff9.jpeg) Hoping @Daniel_Francis, @Dustin_Symanski, or @Jonathan_Gullman can assist. I’ve been a Lifetime Roon subscriber since its inception, and I’ve used HQP for many years so I’m very familiar with their setup but this has me scratching my head… ---
**Author:** ![Jonathan\_Gullman](https://yyz1.discourse-cdn.com/flex003/user_avatar/forum.msbtechnology.com/jonathan_gullman/32/682_2.png) [@Jonathan\_Gullman](https://forum.msbtechnology.com/u/Jonathan_Gullman)\ **Post date:** [December 20, 2024, 12:09am UTC](https://forum.msbtechnology.com/t/prousb-dsd-512-not-working/445/7 "2024-12-20T00:09:40Z")
My guess is the drivers for the USB on your Rendu are out of date. The ProUSB XEF is a different version and by default the built in linux drivers limit it to 256x DSD. The performance is the same, it’s just a different USB identifier. This is not a driver we have control over. I know our product was updated in the open source linux driver by it’s creator last year. It would take Sonore to update their software to make it work at the higher rate. I would say plug it directly into your Mac/Roon but the Mac operating system has the same limitation. ---
**Author:** ![catastrofe](https://avatars.discourse-cdn.com/v4/letter/c/a6a055/32.png) [@catastrofe](https://forum.msbtechnology.com/u/catastrofe)\ **Post date:** [December 20, 2024, 3:32am UTC](https://forum.msbtechnology.com/t/prousb-dsd-512-not-working/445/8 "2024-12-20T03:32:16Z")
Thanks Jonathan. I’ve shared this thread with Jesus…hopefully he’ll be able to assist. ---
**Author:** ![catastrofe](https://avatars.discourse-cdn.com/v4/letter/c/a6a055/32.png) [@catastrofe](https://forum.msbtechnology.com/u/catastrofe)\ **Post date:** [December 20, 2024, 4:17am UTC](https://forum.msbtechnology.com/t/prousb-dsd-512-not-working/445/9 "2024-12-20T04:17:47Z")
Hey Jonathan, I just realized that with my LAiV Harmony DAC fed via USB from the Rendu, I had no issues playing DSD512 via either Roon or HQP. Wouldn’t that indicate the issue doesn’t reside with the Rendu drivers? Thanks, Bob ---
**Author:** ![AntipodesAudio](https://yyz1.discourse-cdn.com/flex003/user_avatar/forum.msbtechnology.com/antipodesaudio/32/54_2.png) [@AntipodesAudio](https://forum.msbtechnology.com/u/AntipodesAudio)\ **Post date:** [December 20, 2024, 11:03am UTC](https://forum.msbtechnology.com/t/prousb-dsd-512-not-working/445/10 "2024-12-20T11:03:29Z")
Have you tried changing the audio device inside Roon from Pro USB to Discrete and giving 512 another go? ---
**Author:** ![catastrofe](https://avatars.discourse-cdn.com/v4/letter/c/a6a055/32.png) [@catastrofe](https://forum.msbtechnology.com/u/catastrofe)\ **Post date:** [December 20, 2024, 1:33pm UTC](https://forum.msbtechnology.com/t/prousb-dsd-512-not-working/445/11 "2024-12-20T13:33:00Z")
Hello, yes. Regardless of whether I use the V2 Renderer fed via Roon, or I use the ProUSB fed via the Rendu in either Roon Endpoint configuration, or in NAA configuration using HQ Player, I can only play DSD256. When using HQ Player if I don’t send the output in DoP, DSD won’t play at all. Another odd thing I noticed is that in Roon Audio Device Setup, there’s no selection for the DSD Playback Strategy as shown in @Dan’s screenshot above. This is what I see (nothing under Advanced Setup either): ![Screenshot 2024-12-20 at 6.31.36 AM](https://canada1.discourse-cdn.com/flex003/uploads/msbtechnology/original/1X/f36f889dca1055afac6eb2594a579b63b8a01f11.png) ---
**Author:** ![Dan](https://yyz1.discourse-cdn.com/flex003/user_avatar/forum.msbtechnology.com/dan/32/39_2.png) [@Dan](https://forum.msbtechnology.com/u/Dan)\ **Post date:** [December 20, 2024, 1:42pm UTC](https://forum.msbtechnology.com/t/prousb-dsd-512-not-working/445/12 "2024-12-20T13:42:56Z")
BTW, the V2 Renderer does not support DSD512. I can only play DSD512 tracks using ProUSB. Dan ---
**Author:** ![catastrofe](https://avatars.discourse-cdn.com/v4/letter/c/a6a055/32.png) [@catastrofe](https://forum.msbtechnology.com/u/catastrofe)\ **Post date:** [December 20, 2024, 1:56pm UTC](https://forum.msbtechnology.com/t/prousb-dsd-512-not-working/445/13 "2024-12-20T13:56:52Z")
Yep, I’m aware but thanks for the reminder. Very odd that you have a DSD Playback Strategy setting in Roon and I don’t… ---
**Author:** ![jvvita](https://avatars.discourse-cdn.com/v4/letter/j/e56c9b/32.png) [@jvvita](https://forum.msbtechnology.com/u/jvvita)\ **Post date:** [December 20, 2024, 5:53pm UTC](https://forum.msbtechnology.com/t/prousb-dsd-512-not-working/445/14 "2024-12-20T17:53:23Z")
I have had this same issue. Not eith rendu, but windows. Hqplayer NAA on windows would not play dsd512. I then installed the naa on a Ubuntu machine, and everything went well. ---
**Author:** ![catastrofe](https://avatars.discourse-cdn.com/v4/letter/c/a6a055/32.png) [@catastrofe](https://forum.msbtechnology.com/u/catastrofe)\ **Post date:** [December 20, 2024, 9:38pm UTC](https://forum.msbtechnology.com/t/prousb-dsd-512-not-working/445/15 "2024-12-20T21:38:25Z")
Thanks for the input. I’m thinking the issue resides with the ProUSB itself (mine is a loaner from my dealer, not a new unit). Here’s why I’ve come to that conclusion: - My LAiV Harmony DAC plays native DSD512 just fine via the Rendu using both Roon and HQ Player as the source so it’s not a Rendu issue. - Via the MSB V2 Renderer, I can play native native DSD 256 so it isn’t a Roon issue, nor is it an issue with my Discrete DAC. - Via ProUSB fed by the Rendu using HQ Player, I can only play DSD256 and only using DoP. Native DSD will not play. ---
**Author:** ![jvvita](https://avatars.discourse-cdn.com/v4/letter/j/e56c9b/32.png) [@jvvita](https://forum.msbtechnology.com/u/jvvita)\ **Post date:** [December 20, 2024, 10:25pm UTC](https://forum.msbtechnology.com/t/prousb-dsd-512-not-working/445/16 "2024-12-20T22:25:51Z")
It might be a Linux driver issue with the pro msb. The only way to rule it out is connecting a Linux machine with a new (24.04) Ubuntu install. If you have a raspberry pi around, it should be easy. Not that dsd512 matters that much…. Indeed, in another thread, MSB hinted that the internal sample rate of the DD and dac is 2822/3072, that is equivalent to dsd x1. So it would immediately downsample the dsd512 feed, as it would upsample any lower rate. Also, I have not experienced any sound quality gain using dsd512 from hqplayer to my cascade. ---
**Author:** ![catastrofe](https://avatars.discourse-cdn.com/v4/letter/c/a6a055/32.png) [@catastrofe](https://forum.msbtechnology.com/u/catastrofe)\ **Post date:** [December 20, 2024, 11:55pm UTC](https://forum.msbtechnology.com/t/prousb-dsd-512-not-working/445/17 "2024-12-20T23:55:23Z")
Yeah, I’m not hung up on DSD512 per se, but I want to make sure the ProUSB operates as intended before I make the financial investment. I’m pretty happy with the quality of the Renderer, so I may just stick with that. I could re-employ my older Nuc/ROCK server and run ROCK \> USB \> ProUSB/ISL. While not a new Ubuntu build, it would/should further isolate the issue. ---
**Author:** ![jvvita](https://avatars.discourse-cdn.com/v4/letter/j/e56c9b/32.png) [@jvvita](https://forum.msbtechnology.com/u/jvvita)\ **Post date:** [December 21, 2024, 12:41pm UTC](https://forum.msbtechnology.com/t/prousb-dsd-512-not-working/445/18 "2024-12-21T12:41:00Z")
I have both inputs. My experience is that the proUSB is superior to the renderer. I am feeding it via hqplayer without any filters enabled (hqplayer in “bit perfect” mode). Superior to roon via the renderer (roon via renderer gives me some “sharp edges). NAA is in a low powered nuc, running Ubuntu 24.04 server (and nothing else). You could give it a go booting Ubuntu live on your nuc (just boot from a usb stick), and installing NAA. I guess it would work pretty fine. Nevertheless, this diffenrence in SQ is the main reason I wanted to see the NAA integrated to the renderer. ---
**Author:** ![catastrofe](https://avatars.discourse-cdn.com/v4/letter/c/a6a055/32.png) [@catastrofe](https://forum.msbtechnology.com/u/catastrofe)\ **Post date:** [December 22, 2024, 8:13pm UTC](https://forum.msbtechnology.com/t/prousb-dsd-512-not-working/445/19 "2024-12-22T20:13:27Z")
Hi Jonathan… I had shared details of this issue with Jesus at Sonore, and apparently (to your point) they need to add/modify drivers for the Rendu to handle the ProUSB. Jesus expects to have them sometime in January, so I’ll follow up in this thread once resolved. Merry Christmas to you and the entire MSB team! Best, Bob