Where can we find the adjustment of HDMI Passthrough indicated in the documentation of the RS130 and not present in the menus of my RS130 or via RoseConnect ?
Documentation :
Versions :
It bypasses HD audio formats such as surround sound sources to audio receiver through HDMI without decoding.
If you go into the input/output settings on the RS130, you can see that there is HDMI in the output. If you click on the small gear icon on HDMI, you can see that there is an HDMI Passthrough function.
Thank you Rosehan
IF Passthrough selected “On” :
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that does not prevent reading Hires audio HDsources available to other outings than the HDMI output (I2S, USB Audio, AES, SPDIF…) ?
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the audio conversion is not taken by the RS130 only for the HDMI output. It is the external decoder connects at the HDMIOUT connector of the RS130 that is responsible for decode multichannel sounds.
Is that exact ?
When Passthrough is set to “On”, the RS130 sends the original, unaltered audio signal (bitstream) through the HDMI OUT port, allowing an external decoder connected via HDMI to handle the decoding of multichannel audio.
In this mode, the RS130 itself does not perform any internal audio conversion for the HDMI output.
However, this setting does not affect the other audio outputs (I2S, USB Audio, AES, SPDIF). These outputs continue to deliver high-resolution audio as usual, and the RS130 will handle conversion and output processing for these channels independently of the HDMI passthrough function.
Passthrough “On” applies only to HDMI OUT.
Other outputs (I2S, USB Audio, AES, SPDIF) remain fully functional for high-resolution audio playback.
The external decoder connected to HDMI OUT is responsible for decoding multichannel signals.
Thank you ROSEHAN, it’s everything we could expect from the RS130 operation, it’s perfect.
I may be a little thick, but I fail to see the benefit of this. I am grateful that you explained how to access the Passthrough feature Rosehan, but even when activated the HDMI is only sending two channels of music to my processor. Despite your acknowledgement that the RS130 does not support Atmos, I was still hoping that it might pass on Spatial Audio signals to my processor.
So I have to ask again, is the reason the RS130 does not pass Atmos information because of the hardware, the operating system or because of licensing fees?
It seems pretty clear from their manual and advertising that this is a 2 channel audio unit.
Not sure I agree with that statement but I am open to being convinced otherwise. Not asking the RS130 to decode Atmos, just to pass the signal on to Dolby Atmos AV processor through HDMI just as a Blu-ray player or an AppleTV does. It is clear that as of today, it cannot. I am just trying to get an answer as to why and if it might in the future. In the meantime I will continue to use the AppleTV and Blu-ray player to listen to music in Dolby Atmos.
ROSEHAN gave me the following answer:
“@domrol
When Passthrough is set to “On”, the RS130 sends the original, unaltered audio signal (bitstream) through the HDMI OUT port, allowing an external decoder connected via HDMI to handle the decoding of multichannel audio.
In this mode, the RS130 itself does not perform any internal audio conversion for the HDMI output.”
Isn’t that what you’re actually seeing?
When I am streaming Dolby Atmos content from Apple Music to the RS130 only two channels are outputted through the HDMI to my AV processor. The Dolby Atmos content is “stripped out” for lack of a better term. True, I can upmix that stereo signal to Auro 3D or DTS Neural X or Dolby Surround, but I cannot get Dolby Atmos to come through in native form.
Perhaps that is what ROSEHAN meant by “allowing an external decoder connected via HDMI to handle the decoding of multichannel audio,” that the RS130 doesn’t change the stereo signal such that an external decoder can no longer upmix.
I don’t need an HDMI out or passthrough to do that, my processor can upmix a stereo signal from the coax or optical outputs just as easily.
I thought that one of the unique features of RS130 was its HDMI output. I mistakenly assumed it could output Dolby Atmos content, and have difficulty understanding why it cannot or does not.
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Mystery solved. Rose is not a Licensed Dolby Manufacturer or Licensee. I hope the company chooses to be one soon.
Can you confirm that you don’t have the Dolby Atmos license and that you likely will one day have one so that the RS130 can play Dolby Atmos music content?
What about other multi-channel audio formats that the RS130 can’t decode due to a missing license, what are they?
We have a contract with Dolby, but we haven’t yet implemented it in our hi-fi products.
However, Dolby’s Atmos and immersive technologies are receiving significant attention in the hi-fi audio market, and relevant albums are being released, so we are keeping a close eye on them.
We are continuing our technical review, so there are no issues with their implementation, but we have not yet determined when they will be implemented in new products.
@ROSEHAN The RS130 Documentation & HDMI Setting states:
Hence, according to the documentation & HDMI Setting, surround sound (and hopefully 3D sound like Dolby Atmos, DTS:X,…) are passthrough (ie, bitstreamed) on the HDMI port.
Please please request HiFi Rose’s development team to fix this bug (ie, to bitstream multi-channel music on HDMI).
Does this mean that a Dolby Atmos audio source cannot be decoded in multichannel by the decoder of an external amplifier if on my RS130 I have configured the Passthrough switch to “On”?
Dolby Atmos is distinct from Dolby Surround, DTS-X and Auro—3D. While all are “immersive” formats, the latter 3 can be upmixed from 2 channel stereo signals. Dolby Atmos is more than a two channel signal (usually 7.1.2) and requires an HDMI cable to carry this multichannel information.
Even with the HDMI Passthrough selected, my RS130 does not send Atmos audio to my Atmos capable processor. The 2 channel signal it does send can be upmixed though, but not to Dolby Atmos.
I did not see Rose among the licensees on the Dolby website. Whatever.
I would love it if the RS130 is a license fee and a software upgrade away from being able to “pass through” an Atmos signal, but I have concluded from what ROSEHAN has written that it won’t. Ever. I will enjoy it for what it is, a 2 channel network transport with an HDMI output that is only useful for video.
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But for all other multi-channel audio formats the RS130 would pass them to the external decoder, correct?
If your processor can upmix to DTS-X or Auro-3D, it can do that with just two channels of audio. I believe I read Auro-3D is of better quality with multiple channels of input but it will still upmix with 2 with Auro-Matic. I do not have any native Auro-3D content to test to see whether the RS130 outputs multiple channels, but I suspect not.
The whole point of HDMI Passthrough it to get Surround formats to pass through untouched. Cmon ROSE!
Worth asking if anyone has tried passing Atmos from anything other than Apple Music. Just curious if it is Apple that is the problem here. I have no ability to try.