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Does Gustard U16 pass-thru multi-channel audio (AC3/DTS)?

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#1

twsecrest

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#2
From what I read, the Gustard U16 can not work with surround sound (more then 2-channels) audio.
So the Gustard seems to be basically
Input, 2-channels (2.0) of PCM (un-compressed) digital audio.
Output, 2-channels (2.0) of (PCM?) analog audio.
Outputs include S/PDIF (optical/coaxial)
One balanced analog output.
Nothing on Apos website suggesting any surround sound function.
But something like headphone surround sound, could be pre-procced, before the signal is sent to the Gustard.
 
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Krazywaffle
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Thread Starter #3
Thanks for the informative reply.

My understanding is that Gustard U16 is a digital interface, not a DAC, and thus just converts digital signal from one format (USB) to another (SPDIF). This is why I thought the U16 might passthrough multichannel audio signals like connecting a source directly to surround sound DAC, processor, or integrated amp via Toslink/coaxial?

It seems the very cheap Phiree U2S digital interface ($30) can pass multichannel audio from USB to SPDIF so I'd think that a much more expensive interface like U16 could as well?

However, the Topping D10s and many other "HiFi USB to SPDIF converters" seem to only deal in 2 channel audio. Perhaps passing multichannel audio onto a surround DAC/processor makes the internal electronics more complicated somehow? Or prevents the 2 channel audio signal from being as HiFi as possible?
 

Kal Rubinson

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#4
It seems the very cheap Phiree U2S digital interface ($30) can pass multichannel audio from USB to SPDIF.........................
But it can't.
First, because it has only one S/PDIF output and it is impossible to send PCM/DSD multichannel via one S/PDIF.
Second, because user reports "only 2-channel formats up to 48k, no multichannel."
 

twsecrest

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#5

twsecrest

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#6
Thanks for the informative reply.
My understanding is that Gustard U16 is a digital interface, not a DAC, and thus just converts digital signal from one format (USB) to another (SPDIF). This is why I thought the U16 might passthrough multichannel audio signals like connecting a source directly to surround sound DAC, processor, or integrated amp via Toslink/coaxial?
It seems the very cheap Phiree U2S digital interface ($30) can pass multichannel audio from USB to SPDIF so I'd think that a much more expensive interface like U16 could as well?
However, the Topping D10s and many other "HiFi USB to SPDIF converters" seem to only deal in 2 channel audio. Perhaps passing multichannel audio onto a surround DAC/processor makes the internal electronics more complicated somehow? Or prevents the 2 channel audio signal from being as HiFi as possible?
The Phiree U2S is a basic converter, USB to S/PDIF (optical/coaxial)
2.0 digital channels in, 2.0 digital channels out, does nothing more.
 
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Krazywaffle
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Thread Starter #7
End result is to obtain the same digital signal transfer via USB that I can (and currently do) obtain via optical Toslink connection (e.g., both 2 channel and 5 channel) because of the advantages associated with transferring digital data via asynchronous USB (jitter reduction via re-clocking).

Phiree US2 is cheap but this website, for example, claims that it can pass stereo, AC3, and DTS signals from USB input to SPDIF output:

"The Phiree U2SX is a simple, efficient and compact USB to SPDIF and Optical to USB interface. It is based on a Bravo SA9023 chip, supporting sampling rates up to 24bit 96kHz. It also allows AC3 and DTS ES signals to pass through (to another multi-channel decoder)."

https://www.audiophonics.fr/en/digi...terface-sa9023-24bit-96khz-silver-p-5850.html

So if this cheap-o USB-to-SPDIF converter can pass multi-channel data, why can't more expensive units (e.g., Gustard U16)?
 

Kal Rubinson

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#8
So if this cheap-o USB-to-SPDIF converter can pass multi-channel data, why can't more expensive units (e.g., Gustard U16)?
Possibly because those "more expensive units" are aimed at users who do not need/want lossy compressed multichannel formats such as AC3, dts, DolbyDigital, etc.
 
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