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What is the best way to get I2S output from streaming?


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On 3/16/2021 at 7:18 PM, MagnusH said:

I am thinking about switching DAC to a R2R with I2S input, and then I would like to use I2S instead of USB. The DAC I am thinking about is Musician Pegasus which has I2S as a HDMI (LVDS) input. I am also using HQPlayer so the solution has to support NAA.

 

I currently use a tweaked/upgraded microRendu behind an opticalModule (fiber in), and run NAA on the microRendu. An easy way to solve I2S with streaming would be to just buy one of the USB -> I2S converters out there like Matrix SPDIF-2 USB.

https://www.audiophonics.fr/en/digital-interfaces/matrix-x-spdif-2-usb-interface-xmos-u208-32bit-768khz-coaxial-aesebu-i2s-hdmi-lvds-p-11975.html

 

Another option would be to use some quality HATs with an RPi, like the reclocking module with the I2S transport module from Ian Canada:
https://www.audiophonics.fr/en/dac-and-interfaces-for-raspberry-pi/ian-canada-fifopi-q3-ultimate-fifo-reclocker-module-pcm-32bit-768khz-dsd1024-dop-p-14758.html
https://www.audiophonics.fr/en/dac-and-interfaces-for-raspberry-pi/ian-canada-hdmipi-transmitter-i2s-dsd-dop-to-hdmi-p-13982.html

 

And then upgrade clocks to something good like the ACCUSILICON AS318-B. I use LiFePo4 cells as power (pure cells), 20Ah, so I have power source covered in either case.

 

But which solution will sound best? In principle I like the RPi solution best since it totally gets away from USB, but actual sound quality is of course more important than preferences like that.

https://community.roonlabs.com/t/not-impressed-by-metrum-ambre-vs-digione/53329

 

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Bonjour un Ambre avec un rpi 4/ gentoo 5.1 avec 1 i-sabre-q2m / k2m / i2s_general avec câble i2s maison (http://forum-hifi.fr/thread-15351.html?highlight=i2s+ambre) et dac qua la voce s3.

 

excusez moi pour le français

rodolphe

Serveur . i7fanless Roon Rock Qobuz Hi-res> Switch  Netgear tweaké Fento c2 mk2 + Meraki alim ncore> Streamer  Ambre Metrum Rpi 4 /i2s> Dac   Aqua La voce S3> Pré Ampli  passif Tortuga ldr3 v2> Ampli  2 blocs Jadis JA 30 Chromés 1984 tubes EL503> Enceintes  Klipschorn 1995 

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The problem with PI2eas (for me) is that I use HQPlayer, and to get best sound you should up-sample to the limit of the DAC which in my case is 16 times (705,6/768 khz) which is not supported by pi2eas.

 

A similar solution from Ian Canada will become a little more expensive (several cards required) but does provide with much higher sample rates (including DSD up to 1024).

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9 hours ago, MagnusH said:

The problem with PI2eas (for me) is that I use HQPlayer, and to get best sound you should up-sample to the limit of the DAC which in my case is 16 times (705,6/768 khz) which is not supported by pi2eas.

 

 

True. I also find the Ian stuff interesting. But it also sums up a bit, with ucconditioners, fifopi and what not. I believe he went all in on batteries, but found supercaps were a big improvement. If you want the best he offers you'll need that as I understand it. But it could be worth it.

 

I just talked to someone who had the full Ian stack (don't know if also with caps, but at least the batteries) and found he liked Ifi zen stream better. I guess a lot has to do with synergy. I couldn't resist that so ordered at zen to test, with option to return. Unfortunately it doesn't have AES out (or i2s for you), which is the best input on my dac, so I think it's a bit handicapped from the start. Hopefully I'll be either even more happy with pi2aes, or happier with the zen, so no matter what happier ;-) You could do the same, test it or the matrix out. It's difficult to predict.

 

There is also the Singxer SU-6 that seems amazing, with i2s.

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