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22 hours ago, SwissBear said:

 

Sì hai ragione. Nell'SU-2, non sembra che nessun chip XMOS sia coinvolto nel processo di USB. Sembra tutto basato su FPGA.

Nell'SDA-6, un chip XMOS è responsabile dell'interfaccia USB.

I risultati sono abbastanza diversi IMO.

Hi, I am following this topic with a lot of interest as I would like to buy an sda-6 pro.  What can you say more about the usb difference between sda-6 pro and su-2?  Does using the ddc actually improve the result compared to sda-6 alone?  Is the improvement worth the cost of the ddc?  (I use a linear powered usbridge signature). 

Many thanks 

Antonio 

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1 hour ago, SwissBear said:

 

Ciao Antonio,

 

È una domanda un po 'difficile, poiché la risposta dipende molto dal tuo gusto personale.

Se non avessi acquistato l'SU-2 prima di acquistare l'SDA-6, probabilmente non ne avrei acquistato uno, perché l'ingresso USB dell'SDA-6 è già molto buono. L'aggiunta di SU-2 offre un po 'più di aerazione negli alti. Ma non al punto che questo sia un must, come su altri DAC i cui ingressi USB sono notoriamente pessimi. E hai già un dispositivo che ha la reputazione di avere un buon isolamento galvanico. Quindi inizia con SDA-6 e divertiti :-)

Solo il mio 2c

Thanks a lot for the answer!

 

If we don't consider Su-2 (or ddc) do you think that the i2s connection is still better than the usb one on sda-6 pro? 

 

If I used usbridge sig with an hat reclocker (like Ian Canada) and LVDS link to sda-6 pro, in your opinion I could get a better result than the usbridge sig -> sda-6 usb connection?

 

Thanks a lot

Antonio 

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16 minutes ago, etane said:

Il mio PC ha una scheda USB Matrix USB Helement che si collega a D900 MQA che ha un ingresso USB XMOS 216. Connessione USB all'avanguardia per quanto mi riguarda. Singxer SU2 ha solo un XMAS 208. 

 

Avevo una D90 non MQA che ha XMOS 208 e, per me, c'è una differenza udibile tra la D90 e la D90MQA.

 

Sebbene SU2 abbia l'ingresso USB più debole, invia il segnale I2S a D90MQA, suona molto meglio della connessione USB.

 

Quindi, il vantaggio principale di SU2 non è il suo ingresso USB, ma è la capacità di inviare un segnale I2S pulito.

Thanks for the reply. The thing is, the topping is a different dac. There may not be much difference between i2s and usb on the sda-6 pro. This is why I asked the opinion of an owner.

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47 minuti fa, SwissBear ha detto:

Antonio,

Non sono davvero un grande fan della soluzione che stai proponendo.

Come è stato ampiamente discusso da eminenti professionisti in questo thread, il tema del reclock o di ottenere un segnale dell'orologio migliore di quello fornito dal DAC è un argomento difficile. L'SDA-6 ha già un orologio eccellente all'ingresso USB e facendo un lavoro migliore che questi oscillatori interni richiedono un orologio di livello molto alto, che non sono sicuro abbia il reclocker del cappello.

Nel caso in cui foste veramente sensibili ai vantaggi dell'orologio ad alta precisione, vi suggerisco di risparmiare i vostri soldi e acquistare un buon orologio in futuro, e collegarlo all'ingresso dell'orologio a 10 MHz del DAC. 

Molte grazie. 

Qualcuno ha mai ascoltato o confrontato sda-6 / pro con rme adi-2 dac? 

Il mio dubbio è che non migliori il risultato che ottengo con adi 2.

Ho letto in qualche post precedente che non c'era molta differenza, anche contro una d70 .. 

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Hello,

I have received my SDA-6 Pro DAC last week and I start doing some tests.

The USB interface is looking almost perfect but I am more fan of AES/EBU in general so I have started some tests using my Auralic Aries G1 as streamer. I found two issues I need to share with you to see if my unit is faulty or it is something related to FW.

First – when using DSD DoP , the stream is decoded correctly but at the final audio stage I hear some noise mixed with normal signal. If  the stream is back to PCM the noise is gone.

Second- sometimes, when switching between different PCM sample rates I hear some strange repetitive noise like the PLL is not able to synchronize to the new frequency – moving to a different input quicky solves the issue – this is not happening all the time but it happens quite often.

I like the sound of SDA-6 compared with my D90 MQA – I enjoy a lot NOS mode for PCM/DSD , the reason of buying this DAC in fact.

Thank you.

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10 hours ago, Tavy said:

Hello,

 

I have received my SDA-6 Pro DAC last week and I start doing some tests.

 

The USB interface is looking almost perfect but I am more fan of AES/EBU in general so I have started some tests using my Auralic Aries G1 as streamer. I found two issues I need to share with you to see if my unit is faulty or it is something related to FW.

 

First – when using DSD DoP , the stream is decoded correctly but at the final audio stage I hear some noise mixed with normal signal. If  the stream is back to PCM the noise is gone.

 

Second- sometimes, when switching between different PCM sample rates I hear some strange repetitive noise like the PLL is not able to synchronize to the new frequency – moving to a different input quicky solves the issue – this is not happening all the time but it happens quite often.

 

I like the sound of SDA-6 compared with my D90 MQA – I enjoy a lot NOS mode for PCM/DSD , the reason of buying this DAC in fact.

 

Thank you.

 

 

Hi Tavy,

 

Thanks for sharing your comments and difficulties. I have not tried the AES/EBU interface myself.

Are you using any external clock signal when feeding AES/EBU ?

Will try go give it a trial next week and report.

 

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Thank you SwissBear for your feedback.

I do not use external clock.

The issue I have with DSD DoP is valid as well for COAX input but not with USB.

I’m using ROON so it is not an issue to convert DSD to PCM but I would like to have all formats as native as possible (no sampling rate change, no digital filters). To my ears, the sound using AES/EBU is more natural, and I do prefer it over USB.

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14 minutes ago, Tavy said:

Thank you SwissBear for your feedback.

 

I do not use external clock.

The issue I have with DSD DoP is valid as well for COAX input but not with USB.

 

I’m using ROON so it is not an issue to convert DSD to PCM but I would like to have all formats as native as possible (no sampling rate change, no digital filters). To my ears, the sound using AES/EBU is more natural, and I do prefer it over USB.

 

Is there Native DSD option or only DSD DoP ?

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I am using Auralic Aries G1 as source, not the PC. Seams there is an audio mixer/switch after the DoP DSD is decoded which is introducing this noise.  This is only valid for DoP signal over SPDIF -  for PCM the noise is disappearing

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Hi,

I had a reply from the manufacturer that this issue with DoP could be a firmware issue. It appears on AES/EBU and COAX inputs but not on USB.

For the sampling rate issue (when changing from 48 to 44 ) I have just added a delay on ROON when switching format and the issues was solved.

Now, I don’t know if I still have to wait for a firmware update or return the DAC to the dealer as defective.

I need a second test to confirm the issue but looks like I am the only one using this configuration.

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If you are happy with the sound quality and performance you could wait for the firmware update, surely they will do an update soon since they know about the problem.
Are you happy with the DAC? Asking because it's in my list of next DACs to consider. :)
 

Audirvana+3.0 / Qobuz Studio / Mac Mini (256GB SSD - 16GB RAM)

Lindemann Musicbook: 20 DSD, ATC EL 150ASL

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6 hours ago, Tavy said:

Hi,

I had a reply from the manufacturer that this issue with DoP could be a firmware issue. It appears on AES/EBU and COAX inputs but not on USB.

For the sampling rate issue (when changing from 48 to 44 ) I have just added a delay on ROON when switching format and the issues was solved.

Now, I don’t know if I still have to wait for a firmware update or return the DAC to the dealer as defective.

I need a second test to confirm the issue but looks like I am the only one using this configuration.

 

Sorry for the late answer. Been busy trying another DAC of interest (Gustard x26Pro) :-)

 

I reconnected the SDA-6, used my SU-2 to generate an AES/EBU flow from my USB output.

In HQPlayer, I chose DoP at 64x44.1k

531348927_ScreenShot2021-04-11at4_56_42PM.thumb.png.938ed59e8a17b6b76e76a4ee90b954d1.png

 

IMG_6892.thumb.jpeg.ce09ec049373c76166df796d0dba535b.jpeg

 

Everything if working well.

Is this the test you were looking for ?

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10 minutes ago, SwissBear said:

 

Sorry for the late answer. Been busy trying another DAC of interest (Gustard x26Pro) :-)

 

I reconnected the SDA-6, used my SU-2 to generate an AES/EBU flow from my USB output.

In HQPlayer, I chose DoP at 64x44.1k

531348927_ScreenShot2021-04-11at4_56_42PM.thumb.png.938ed59e8a17b6b76e76a4ee90b954d1.png

 

IMG_6892.thumb.jpeg.ce09ec049373c76166df796d0dba535b.jpeg

 

Everything if working well.

Is this the test you were looking for ?

How do you control volume ? I see -60bd for min vol.

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