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Post by Stephen Park on Aug 21, 2024 21:58:39 GMT -5
Part of what makes this sort of thing confusing is the use of words like "native"... You can send DSD over HDMI without converting it... which many would refer to as "sending it natively". But "native DSD", in the context of a DoP connection via USB, means something different. So "sending DSD natively over HDMI" is DIFFERENT THAN "sending 'native DSD' over HDMI".... Because "sending DSD natively over HDMI" would mean sending DSD over HDMI without converting it (which the RMC-1 supports)... While "sending 'native DSD' over HDMI" would mean sending "native DSD DoP packets" over HDMI (which we do NOT support)... (hey... I feel ya... but we didn't make this stuff up) In this case... The RMC-1 is capable of receiving DSD over HDMI... which would be indicated in our EDID. However, we DO NOT support receiving "native DSD over USB"... and so would NOT be listed as "supporting native DSD" under "USB output options". The real bottom line here is that DSD is not an especially popular format... Therefore support for it varies from device to device... And it also still carries some rather arcane copy protection restrictions... For example, a "fully compliant hardware SACD player", can play both DSD files and the DSD layer of SACD discs, as DSD audio data via HDMI. But that same "fully compliant hardware SACD player", can play DSD files, BUT NOT the DSD layer of SACD discs, via Coax or USB. (Only the HDMI output is encrypted and so meets the security requirements mandated for playing DSD data from a physical SACD disc.) (This is moot for software players since you cannot play a physical SACD disc on a computer... because there are no SACD drives for computers.) However, with software players, support for various DSD types and DSD output options varies quite widely... And the setup options to enable some of them can be really complicated... The best advice I can give there is to focus on "what they say it can do" rather than "the terminology they use". So, for example, most devices that "can play DSD over HDMI" can talk to most devices that "can understand DSD over HDMI"... And most devices that say they support DoP can be convinced to talk to other devices that support DoP... "Native DSD / DoP" tends to be a lot more complicated ... although most devices that support it also support regular DoP.) But... to address the original comment... "but still there is no native DSD option... weird." That's NOT weird... it supports "DSD over HDMI" and it would either "convert to PCM" or NOT convert to PCM. So, if you tell it to send DSD over HDMI, and DON'T check that "convert to PCM" box, then it's JUST "DSD over HDMI"... (And, if the receiving device doesn't support DSD, then the sending device will just convert the output to PCM without telling you.) And, yes, that IS what Oppos do... You've set it to DSD, and the display on the player will show DSD, but it will "silently convert to PCM" if the receiving device doesn't accept DSD. (There is a way to get an Oppo to display what's REALLY going on... it's either hold the Info button for a few seconds or double-tap it... I forget which.) Keith, thanks for your clarification about "native DSD". Nowadays many people said it and just understand what it means "Untouched DSD"... I also understand it's meaning as it is... What I said on my post... "but still there is no native DSD option... weird." I can change it's words like "but still there is no 'DSD natively over HDMI' option...."  It is just off topic of this forum... because it is "Roon", not RMC nor XMC... However I can show that the Roon setup... It should have "DSD over HDMI(Natively)" if they support it, but no such option exist for HDMI connection, and they said it is "Designed as it is..." And they know HDMI is not support DoP but still there is this option exist... it is weird thing that I said...   And OPPO, it basically only send "DSD" over HDMI as you said... That is what I use for listen multi-channel DSD with RMC-1L. But there is indeed "Extract DSD signal from HDMI and convert DoP and send over Coaxial" hacking hardware is exist, I use it too... it support stereo / multichannel with maximum x2 DSD signal, also pure PCM signal as well with maximum 192KHz sample rate. Unlike many Chinese "Hacking extraction PCB", it uses professional chip from Comtrue Inc, CT7302EL, and it performs nicely. Change OPPO analog PCB to this board, then it extracts DSD signal from HDMI, encapsulate PCM(DoP), and send over Coaxial, I use this for my Chord DAVE. Just information... I believe it still on ebay...    And it sound really good. I love it. Maybe it still on eBay... And, G4P RMC plus will support DSD for USB? And if so, will it supports Multi-Channel DSD as well (by USB stream)? |
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Post by lavocat on Sept 1, 2024 4:26:00 GMT -5
I've got answer from EMO concerning Apple TV digital noise while using VRO mode. This is first time I receive "Solution" for this problem, however, it is impossible to 100% prevent this error. It said because of Apple's specific PCM "signature" makes processor lost clock. Maybe Roku also have similar PCM "signature" then...? This is what I've got from EMO: Unfortunately, Apple has a specific PCM "signature," and the DSP will sometimes miss the clock, resulting in robotic digital noise.
Here are some steps to follow:
1a.) Back out of the current show you are viewing and start up another one (preferably an ATOMS show). You can also navigate the home menu until you hear the navigation bips in the speakers then start the show again. (1b. OR set the output of the Apple TV to Dolby Digital; you will lose ATOMS with this setting. This is probably not preferable)
2.) Powering on and powering off technique works also
3.) If the processor is on and you are viewing content, you can change the sound field mode to another and back, and it will correct.
Unfortunately, that is the only fix at the moment. I am hopeful the new revamp code will fix this issue.
Thanks for this answer, EMO, however, in my case, only effective solution is, No.2, power cycle. Change sound fields, change sound mode from ATMOS to Dolby Digital does nothing with this error. I did it already couple times without any success. This error is start when RMC is wake up from standby mode, but not always. I can't pinpoint exactly in what cases this problem starts. Unfortunately, it could not be fixed by final firmware unless final firmware uses completely re-programmed amps and DSP codes.... Probably I will have this error until my RMC is gone.... I will ask it again to EMO and if there is any positive news about last firmware, I will post it here again. The most consistent and easiest fix for my XMC-2 is toggling HDMI inputs on the remote control. That is, from HDMI 1 to HDMI 2 and then back to HDMI1. Right. 50% of time after startup I have no image & sound with my cable tv box. I also just switch the inputs and my Emo then catch the signal 😉 |
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Post by marcl on Sept 1, 2024 5:17:24 GMT -5
The most consistent and easiest fix for my XMC-2 is toggling HDMI inputs on the remote control. That is, from HDMI 1 to HDMI 2 and then back to HDMI1. Right. 50% of time after startup I have no image & sound with my cable tv box. I also just switch the inputs and my Emo then catch the signal 😉 I do occasionally get the digital noise from the Apple TV4K. But ... I also sometimes get it when playing music from my PC over HDMI. When that happens (and it is rare) it's when I'm playing 2-channel music and then play something 5.1. Just saying ... because it could maybe be the same sort of cause, but the symptom is definitely not exclusive to Apple TV. |
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Post by doc1963 on Sept 1, 2024 6:39:18 GMT -5
Right. 50% of time after startup I have no image & sound with my cable tv box. I also just switch the inputs and my Emo then catch the signal 😉 I do occasionally get the digital noise from the Apple TV4K. But ... I also sometimes get it when playing music from my PC over HDMI. When that happens (and it is rare) it's when I'm playing 2-channel music and then play something 5.1. Just saying ... because it could maybe be the same sort of cause, but the symptom is definitely not exclusive to Apple TV.Agreed... and I've always suspected that this particular issue has something to do with how the G3 processors react to PCM being delivered via HDMI. By design, that's how the AppleTV delivers audio (including Atmos via Dolby MAT) and would assume is also how your PC would deliver 2ch music. We would likely see this issue present itself more often when using an AppleTV only because it's the one source device that many of us own that is always connected via HDMI and always delivers its audio by way of either multi-channel LPCM or Dolby MAT (which itself is MC LPCM along with Atmos metadata). But I do very much agree that this issue isn't exclusive to the AppleTV as I've encountered it myself on a few occasions when playing CDs using my Blu-ray player. |
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Post by aswiss on Sept 4, 2024 5:55:39 GMT -5
And, G4P RMC plus will support DSD for USB? And if so, will it supports Multi-Channel DSD as well (by USB stream)? To be honest, I haven't seen any MCH DSD over USB ever.
I ripped all my SACD for my personal convenience, both 2.0 and MCH. DSD 2.0 is part of my music collection, managed by Roon - and the DSD MCH (5.0/5.1) are stored on my NAS separately.
I still browse the MCH DSD with my oppo 203 over LAN, and play them over HDMI, same as I would play from disc.
I don't expect any offer here to support them over USB.
In my Setup, that would not even make sense anymore, because I separated Stereo from the RMC-1. My G3P only runs all HDMI Devices - the rest is analog (Phono, Streamer etc. ) and attached directly to my Integrated Stereo.
Music has a higher importance to me, and this was the best way to go - as my Stereo AMP is way superior than ANY AV Device.
And I have only some 50+ Multi Channel DSD - I don't need more features. I would prefer that DSD over HDMI would not cause any click sounds when switch from DSD to other formats on the G3P.
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Post by AudioHTIT on Sept 4, 2024 10:47:46 GMT -5
Last week some photos popped up on their 5 year anniversary, my ‘Owners Club’ pass arrives. “It’s here! (lip smackin’ good)”  “Passes the sniff test!”  “Set it up dad, set it up!”  Obligatory’Unboxing’ shots   |
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ttocs
Global Moderator 
I always have a wonderful time, wherever I am, whomever I'm with. (Elwood P Dowd)
Posts: 8,154
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Post by ttocs on Sept 4, 2024 14:28:22 GMT -5
What are those gold things on the back? |
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Post by AudioHTIT on Sept 4, 2024 14:48:42 GMT -5
What are those gold things on the back? We just call them … geebo’s jewelry! |
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Post by geebo on Sept 4, 2024 17:24:59 GMT -5
From 7/18/2014  And who can forget these?  |
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LCSeminole
Global Moderator
Res firma mitescere nescit.
Posts: 20,849
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Post by LCSeminole on Sept 4, 2024 19:36:41 GMT -5
What are those gold things on the back? We just call them … geebo’s jewelry! I was present when Mrs. Geebo made the decision to go with the one with the pretty gold plugs, those closed the deal, at least that’s how I remember it!!! |
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Post by geebo on Sept 4, 2024 21:02:04 GMT -5
We just call them … geebo’s jewelry! I was present when Mrs. Geebo made the decision to go with the one with the pretty gold plugs, those closed the deal, at least that’s how I remember it!!! You remember it exactly as I do. Well, except that it was the "gold thingies" on the back. |
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Post by Stephen Park on Sept 5, 2024 21:39:29 GMT -5
And, G4P RMC plus will support DSD for USB? And if so, will it supports Multi-Channel DSD as well (by USB stream)? To be honest, I haven't seen any MCH DSD over USB ever.
I ripped all my SACD for my personal convenience, both 2.0 and MCH. DSD 2.0 is part of my music collection, managed by Roon - and the DSD MCH (5.0/5.1) are stored on my NAS separately.
I still browse the MCH DSD with my oppo 203 over LAN, and play them over HDMI, same as I would play from disc.
I don't expect any offer here to support them over USB.
In my Setup, that would not even make sense anymore, because I separated Stereo from the RMC-1. My G3P only runs all HDMI Devices - the rest is analog (Phono, Streamer etc. ) and attached directly to my Integrated Stereo.
Music has a higher importance to me, and this was the best way to go - as my Stereo AMP is way superior than ANY AV Device.
And I have only some 50+ Multi Channel DSD - I don't need more features. I would prefer that DSD over HDMI would not cause any click sounds when switch from DSD to other formats on the G3P.
Yeah, I also play MCH via oppo 203 over LAN, by mConnect, via HDMI to G3P. Another way, Roon server, via HDMI to G3P too. With oppo 203, G3P shows DSD 5.1, with Roon, G3P shows PCM 5.1 because Roon has no capable of send pure DSD over HDMI, it always convert DSD to PCM, Roon support said that I have to install ASIO driver for support DSD direct. I did not know that there is no MCH DSD over USB... it was just question from out of curiosity  Thanks for your answer! |
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Post by Stephen Park on Oct 1, 2024 11:44:05 GMT -5
Quick question:
I am enjoying RMC-1L with Roon, which connected via HDMI to Roon Server (Windows Machine).
Especially DSD multi-channel source, which Roon convert it to PCM 5.1/5.0/4.0 defending source type and downsample it to 176.4KHz.
I then set this input sound mode to “Direct“ because I don’t want any Dolby/Surround/DTS/Neural mode to DSP kicks in. However, I still want my Dirac calibrated room correction system with this “Direct” mode. With 2-channel Stereo, “Reference Stereo” has no Dirac affected mode, in my knowledge. “Direct” also as same as “Reference Stereo”? If so, which mode I can use for enjoy multichannel music as it is without much DSP intervened but still Dirac involved?
If I play DSD Direct mode, I know there is no any DSP nor Dirac but pure sound. But this Roon does not support DSD send natively via HDMI, maybe because RMC is not roon certified device, perhaps RMC+ G4P will Roon certified and support DSD via HDMI? (Like OPPO 203/205).
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Post by aswiss on Oct 2, 2024 10:51:15 GMT -5
Quick question: I am enjoying RMC-1L with Roon, which connected via HDMI to Roon Server (Windows Machine). Especially DSD multi-channel source, which Roon convert it to PCM 5.1/5.0/4.0 defending source type and downsample it to 176.4KHz. I then set this input sound mode to “Direct“ because I don’t want any Dolby/Surround/DTS/Neural mode to DSP kicks in. However, I still want my Dirac calibrated room correction system with this “Direct” mode. With 2-channel Stereo, “Reference Stereo” has no Dirac affected mode, in my knowledge. “Direct” also as same as “Reference Stereo”? If so, which mode I can use for enjoy multichannel music as it is without much DSP intervened but still Dirac involved? If I play DSD Direct mode, I know there is no any DSP nor Dirac but pure sound. But this Roon does not support DSD send natively via HDMI, maybe because RMC is not roon certified device, perhaps RMC+ G4P will Roon certified and support DSD via HDMI? (Like OPPO 203/205). For Dirac, I cannot give you the answer, as I'm not using it.
I use my oppo203, browse through the network folder with DSD MCH and play it from there - because this is working just fine and the only way it worked for me. My Roon Core is separate from my setup, and I use my Rose Streamer for all music Playback, directly attached to my Stereo AMP (analog out) or my DAC within my Stereo AMP.
so the only music I listen over my RMC-1 is played either from my oppo or concert videos over my Shield TV - both attached with HDMI.
did you already ready this article from Roon regarding Multichannel Setup? soundwise I'm pretty sure that you don't hear any difference between DSD or a downsampled MCH with 176.4 kHz over Roon. I neither do when playing DSD 2.0 nativ or downsampled.
I was never able to use my Roon Bridge PC with HDMI attached to the RMC-1 to get DSD MCH running.
So when I'm in the mood for DSD MCH, I start my oppo203 - I have only some 130 ripped album, so not that much compared with my 6500+ album in Stereo, stored on a different folder on my NAS.
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Post by geebo on Oct 2, 2024 13:50:41 GMT -5
Quick question: I am enjoying RMC-1L with Roon, which connected via HDMI to Roon Server (Windows Machine). Especially DSD multi-channel source, which Roon convert it to PCM 5.1/5.0/4.0 defending source type and downsample it to 176.4KHz. I then set this input sound mode to “Direct“ because I don’t want any Dolby/Surround/DTS/Neural mode to DSP kicks in. However, I still want my Dirac calibrated room correction system with this “Direct” mode. With 2-channel Stereo, “Reference Stereo” has no Dirac affected mode, in my knowledge. “Direct” also as same as “Reference Stereo”? If so, which mode I can use for enjoy multichannel music as it is without much DSP intervened but still Dirac involved? If I play DSD Direct mode, I know there is no any DSP nor Dirac but pure sound. But this Roon does not support DSD send natively via HDMI, maybe because RMC is not roon certified device, perhaps RMC+ G4P will Roon certified and support DSD via HDMI? (Like OPPO 203/205). You can use any listening mode other than Reference or Direct. All the others use the DSP. I would use Surround to get basic multichannel with Dirac. |
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Post by Stephen Park on Oct 2, 2024 23:41:37 GMT -5
Quick question: I am enjoying RMC-1L with Roon, which connected via HDMI to Roon Server (Windows Machine). Especially DSD multi-channel source, which Roon convert it to PCM 5.1/5.0/4.0 defending source type and downsample it to 176.4KHz. I then set this input sound mode to “Direct“ because I don’t want any Dolby/Surround/DTS/Neural mode to DSP kicks in. However, I still want my Dirac calibrated room correction system with this “Direct” mode. With 2-channel Stereo, “Reference Stereo” has no Dirac affected mode, in my knowledge. “Direct” also as same as “Reference Stereo”? If so, which mode I can use for enjoy multichannel music as it is without much DSP intervened but still Dirac involved? If I play DSD Direct mode, I know there is no any DSP nor Dirac but pure sound. But this Roon does not support DSD send natively via HDMI, maybe because RMC is not roon certified device, perhaps RMC+ G4P will Roon certified and support DSD via HDMI? (Like OPPO 203/205). For Dirac, I cannot give you the answer, as I'm not using it.
I use my oppo203, browse through the network folder with DSD MCH and play it from there - because this is working just fine and the only way it worked for me. My Roon Core is separate from my setup, and I use my Rose Streamer for all music Playback, directly attached to my Stereo AMP (analog out) or my DAC within my Stereo AMP.
so the only music I listen over my RMC-1 is played either from my oppo or concert videos over my Shield TV - both attached with HDMI.
did you already ready this article from Roon regarding Multichannel Setup? soundwise I'm pretty sure that you don't hear any difference between DSD or a downsampled MCH with 176.4 kHz over Roon. I neither do when playing DSD 2.0 nativ or downsampled.
I was never able to use my Roon Bridge PC with HDMI attached to the RMC-1 to get DSD MCH running.
So when I'm in the mood for DSD MCH, I start my oppo203 - I have only some 130 ripped album, so not that much compared with my 6500+ album in Stereo, stored on a different folder on my NAS.
My Roon Server is connected to my RMC-1L via HDMI, and Roon can send music stream to my RMC-1L. However, there is serious(or not) limitations as exactly as you said - Roon HDMI can't send DSD "Natively - not DSD nor DoP" to RMC-1L. On the other hand, my oppo203 can send 2CH or MCH DSD "Natively" to RMC via HDMI, in this case, RMC recognizes it is DSD, so display panel shows "DSD Direct". One small problem is, DSD Direct is as same as Reference Stereo - show Dirac does not do anything for room correction EQ. I prefer to listen MCH music or movie with Dirac, so DSD direct is not my taste because it does not do "Room Correction". However sometimes I want listen MCH original DSD - as it is - with oppo 203 - like what you do. Roon only provide converted and down-sampled DSD via HDMI... I don't know why. My question was, there is Auto, Surround, DTS Neural, All Channel Stereo, Stereo, Reference Stereo and Direct mod in RMC.
Reference Stereo is definitely without Dirac. What about Direct mode? Is Dirac activates when using Direct mode?When I listen multi-channel PCM music, RMC automatically change mode to what I set for that input - I set to "Direct" for Roon HDMI input. When listen multi-channel PCM, if any upmixer involved like Surround or DTS Neural:X, sound stage changed, I can hear differences. I believe that it is not what original sound engineer wants, otherwise they encode music for Dolby or DTS as DVD or Blu-Ray. So, DSD Direct is without Dirac which I don't want, Surround/Dolby/Etc mode changes sound stage so I don't like too. Direct mode is ok but what about Dirac on Direct mode...? I found answer from manual, Page 13. Direct ModeDirect Mode provides a relatively pure listening experience, and eliminates most processing, but still retains bass management. In Direct Mode: • The output contains the same number of channels as the input signal. • No extra channels are synthesized; if the output channel that corresponds to a given input channel is not present, that channel signal is mixed into the appropriate available channels. • Bass management IS available and the subwoofer IS active. • You CANNOT use the Loudness Control, or the Tone Presets, or the Tone Trims • You CANNOT use Dirac Live or the manual Parametric EQ Presets. • Level Trims, which operate in the analog domain, are still available. So, I can't use Dirac for Direct mode... so my Dirac Room Correction is not working on Direct mode...! No..! Oh my... |
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Post by Stephen Park on Oct 2, 2024 23:47:23 GMT -5
Quick question: I am enjoying RMC-1L with Roon, which connected via HDMI to Roon Server (Windows Machine). Especially DSD multi-channel source, which Roon convert it to PCM 5.1/5.0/4.0 defending source type and downsample it to 176.4KHz. I then set this input sound mode to “Direct“ because I don’t want any Dolby/Surround/DTS/Neural mode to DSP kicks in. However, I still want my Dirac calibrated room correction system with this “Direct” mode. With 2-channel Stereo, “Reference Stereo” has no Dirac affected mode, in my knowledge. “Direct” also as same as “Reference Stereo”? If so, which mode I can use for enjoy multichannel music as it is without much DSP intervened but still Dirac involved? If I play DSD Direct mode, I know there is no any DSP nor Dirac but pure sound. But this Roon does not support DSD send natively via HDMI, maybe because RMC is not roon certified device, perhaps RMC+ G4P will Roon certified and support DSD via HDMI? (Like OPPO 203/205). You can use any listening mode other than Reference or Direct. All the others use the DSP. I would use Surround to get basic multichannel with Dirac. Yes, on manual(I found) can not use Dirac for Direct mode. So I will test "Surround" mode as you said, without Dirac and see how sound will changed compared with "Direct" mode... Exactly how "sound stage" will changed. If "Surround without Dirac" and "Direct" gets almost same sound stage and image(volume differences of each mode's surround, center channel), then I will activate Dirac for Surround mode and use it. Good choice for this test is multi-channel sound test track for left, center, right, surround left, surround right pink noise test... will see any upmix or downmix or apply synthesized channel is created(in my case, my total channel is 9.1.4 so basically 5.1/5.0/4.0 format multi-channel PCM will not up/downmix nor create channel, probably). Thanks for your suggestion! Otherwise... I will use Direct mode even if Dirac is not working... |
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KeithL
Administrator
Posts: 10,261
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Post by KeithL on Oct 3, 2024 12:10:56 GMT -5
I think your concerns about things like sound stage with Dirac Live are... unfounded... Running Dirac Live is going to make major changes to the way everything sounds... and that includes sound stage... That's sort of the whole point of running Dirac Live... to change the way things sound for the better... And a big part of that is going to correct for anomalies that tend to mess up sound stage and imaging. (Making things sound "exactly the same but somehow magically better" is just not a thing...) Things are probably going to sound very different after you run Dirac Live... Most people find that difference to be an improvement... but it IS going to be different... You can use any listening mode other than Reference or Direct. All the others use the DSP. I would use Surround to get basic multichannel with Dirac. Yes, on manual(I found) can not use Dirac for Direct mode. So I will test "Surround" mode as you said, without Dirac and see how sound will changed compared with "Direct" mode... Exactly how "sound stage" will changed. If "Surround without Dirac" and "Direct" gets almost same sound stage and image(volume differences of each mode's surround, center channel), then I will activate Dirac for Surround mode and use it. Good choice for this test is multi-channel sound test track for left, center, right, surround left, surround right pink noise test... will see any upmix or downmix or apply synthesized channel is created(in my case, my total channel is 9.1.4 so basically 5.1/5.0/4.0 format multi-channel PCM will not up/downmix nor create channel, probably). Thanks for your suggestion! Otherwise... I will use Direct mode even if Dirac is not working... |
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Post by aswiss on Oct 3, 2024 18:42:09 GMT -5
For Dirac, I cannot give you the answer, as I'm not using it.
I use my oppo203, browse through the network folder with DSD MCH and play it from there - because this is working just fine and the only way it worked for me. My Roon Core is separate from my setup, and I use my Rose Streamer for all music Playback, directly attached to my Stereo AMP (analog out) or my DAC within my Stereo AMP.
so the only music I listen over my RMC-1 is played either from my oppo or concert videos over my Shield TV - both attached with HDMI.
did you already ready this article from Roon regarding Multichannel Setup? soundwise I'm pretty sure that you don't hear any difference between DSD or a downsampled MCH with 176.4 kHz over Roon. I neither do when playing DSD 2.0 nativ or downsampled.
I was never able to use my Roon Bridge PC with HDMI attached to the RMC-1 to get DSD MCH running.
So when I'm in the mood for DSD MCH, I start my oppo203 - I have only some 130 ripped album, so not that much compared with my 6500+ album in Stereo, stored on a different folder on my NAS.
My Roon Server is connected to my RMC-1L via HDMI, and Roon can send music stream to my RMC-1L. However, there is serious(or not) limitations as exactly as you said - Roon HDMI can't send DSD "Natively - not DSD nor DoP" to RMC-1L. On the other hand, my oppo203 can send 2CH or MCH DSD "Natively" to RMC via HDMI, in this case, RMC recognizes it is DSD, so display panel shows "DSD Direct". One small problem is, DSD Direct is as same as Reference Stereo - show Dirac does not do anything for room correction EQ. I prefer to listen MCH music or movie with Dirac, so DSD direct is not my taste because it does not do "Room Correction". However sometimes I want listen MCH original DSD - as it is - with oppo 203 - like what you do. Roon only provide converted and down-sampled DSD via HDMI... I don't know why. My question was, there is Auto, Surround, DTS Neural, All Channel Stereo, Stereo, Reference Stereo and Direct mod in RMC.
Reference Stereo is definitely without Dirac. What about Direct mode? Is Dirac activates when using Direct mode?When I listen multi-channel PCM music, RMC automatically change mode to what I set for that input - I set to "Direct" for Roon HDMI input. When listen multi-channel PCM, if any upmixer involved like Surround or DTS Neural:X, sound stage changed, I can hear differences. I believe that it is not what original sound engineer wants, otherwise they encode music for Dolby or DTS as DVD or Blu-Ray. So, DSD Direct is without Dirac which I don't want, Surround/Dolby/Etc mode changes sound stage so I don't like too. Direct mode is ok but what about Dirac on Direct mode...? I found answer from manual, Page 13. Direct ModeDirect Mode provides a relatively pure listening experience, and eliminates most processing, but still retains bass management. In Direct Mode: • The output contains the same number of channels as the input signal. • No extra channels are synthesized; if the output channel that corresponds to a given input channel is not present, that channel signal is mixed into the appropriate available channels. • Bass management IS available and the subwoofer IS active. • You CANNOT use the Loudness Control, or the Tone Presets, or the Tone Trims • You CANNOT use Dirac Live or the manual Parametric EQ Presets. • Level Trims, which operate in the analog domain, are still available. So, I can't use Dirac for Direct mode... so my Dirac Room Correction is not working on Direct mode...! No..! Oh my... I have my room (living room) done with acoustic treatments, in a way that I don't need any extra DSP. I needed to do this, when I decided to separate Music from the Rest. the better the room treatment is done, the less you need to correct within the DSP Domain.
The Reason for DSD Direct is, that no DSP would work due to 1-bit Bitrate. the DSP needs to downsample at least to 96 kHz to pass the DSP - and then its no longer DSD (Direct Stream Digital).
It's the way it is meant to work. If you want it working with your Dirac Room Correction, you would convert the material to 5.1 96 kHz in FLAC, so Roon can address it.
The oppo has the DSD capability built in, as it can also play SACD. Roon is not designed for that, but offer to play the files, like any other software (foobar, Audirvana etc)
And just to mention - you can also not send DSD Files over Ethernet from Roon to oppo - as this is again limited to Stereo only.
And about the Sound Engineering: most of the SACD were originally not recorded in Multi-channel Format afaik - they are upmixed to 5.1 by just putting the vocals on the center, and the rest is around, or playing with moving objects through channels.
Except for the sound layering with moving sound objects, a Surround Mode does more or less the same.
Try Pink Floyd's DSOTM on SACD with Surround Mode active, then you can experience funny things from the Atmos Channels.
Direct is Direct, and for me this is good to go.
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Thanks for your answer!