ESS Sabre Reference DAC (8-channel) - Page 188

Bunpei · 29th June 2011, 03:35 PM

Hi, PHEONIX,

Please read my PM sent to you.

Bunpei

Bunpei · 3rd July 2011, 11:12 AM

Does anyone try any synchronous configuration of I2S for ES9018, with such lower MCLK frequency range as 11. 2896 MHz, or 22.5792 MHz for fs=44.1 kHz source?
I just tried 22.5792 MHz synchronous MCLK input to master clock XI pin of ES9018 and found it feasible enough for from fs=44.1 kHz to fs=352.8 kHz sources under OSF = OFF conditions.

wktk_smile · 3rd July 2011, 12:15 PM

Hi, Bunpei
I' ve just tried feeding 11.2896mhz to BuffaloII directly from QA-550's XO pin after reading your post. It works very well

I found it gives better soundstage and 3D imaging. Quite enjoyable although it can play only 16bit/44.1khz wav files.

wktk_smile · 09:36 AM

According to the ES9018's datasheet, IF you only play 16bit/44.1khz files, 11.2896mhz is enough for
OSF mode. I had tried it after previous post and the result was much better than bypassing OSF.

Now Mid and Hi are much cleaner and more opened, and more "natural" in addition to detailed/better difined sound

Bunpei · 7th July 2011, 04:26 PM

Hi, wktk_smile,

Thank you very much for your replies to my question!
Yes, you are correct. As far as a master clock frequency > 192 fs, OSF mode can be ON.

Have you already tried, 90.3168 MHz(44.1 kHz x 2048) or 98.3040 MHz(48 kHz x 2048) synchronous master clock of SDTrans384 with your Buffalo II?

Bunpei

wktk_smile · 7th July 2011, 09:07 PM

Yep, I received EEPROM for synchronous ES9018 from Chiaki san.
It's really astonishing. I will report to "MicroSD memory card Transport Project" thread.

Bunpei · 21st July 2011, 03:19 PM

Close-up photos are shown on the site;
Wizard High-End Audio Blog: More pictures of Accuphase DC-901

Two ES9018 chips per channel, 16 DAC modules for one channel!

One 40MHz master clock oscillator per channel.

pjo · 31st July 2011, 10:20 AM

Quote:

Originally Posted by Bunpei

An ES9018-based DAC, CAPRICE by Fidelix is bringing up a mood of reappraisal of DSD sounds in Japan. The DAC offers an option of raw DSD signal input and I heard that at least two famous audio reviewers in Japan purchased CAPRICE with the option.

According to Functional Block Diagram in Product Brief document of ES9018, it seems for me that DSD signals are converted into PCM at the stage prior to oversampling in ES9018. This approach seems quite different from such DAC chips, TI DSD1702 or DSD1608 that has a dedicated DSD filtering signal path.
How do you feel about this point?

Hi, I think I read that 9018 DSD is not converted to PCM in this thread. Can anyone confirm that DSD signal is not converted internally in ESS 9018 ?

Best

Takaji · 2nd September 2011, 01:19 AM

Good news to those who wanted to see the ES9018 DAC datasheet!

I spoke with Bryan at Shaw Electronics (shawelectronics.com), the US distributor for the chip... he said that 6 months ago the ES9018 datasheet was taken off the non-disclosure agreement list, so now you just have to request it and he will send it to you.

So, if you want the ES9018 DAC datasheet, kindly email Bryan at "bryan at shawelectronics dot com" and ask!

qusp · 2nd September 2011, 02:06 AM

ermm, this has been public knowledge for quite a while and has been posted in here already, thanks though =)

4th July 2011, 09:31 AM	#1874
wktk_smile diyAudio Member Join Date: Dec 2009 Location: Kyoto	small update on QA-550/Buffalo II syncronous combo According to the ES9018's datasheet, IF you only play 16bit/44.1khz files, 11.2896mhz is enough for OSF mode. I had tried it after previous post and the result was much better than bypassing OSF. Now Mid and Hi are much cleaner and more opened, and more "natural" in addition to detailed/better difined sound Last edited by wktk_smile; 4th July 2011 at 09:36 AM. Reason: hope to avoid misunderstanding

21st July 2011, 03:19 PM	#1877
Bunpei diyAudio Member Join Date: Aug 2008	ES9018 chips in Accuphase DC-901 Close-up photos are shown on the site; Wizard High-End Audio Blog: More pictures of Accuphase DC-901 Two ES9018 chips per channel, 16 DAC modules for one channel! One 40MHz master clock oscillator per channel.

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29th June 2011, 03:35 PM	#1871
Bunpei diyAudio Member Join Date: Aug 2008	Hi, PHEONIX, Please read my PM sent to you. Bunpei

3rd July 2011, 11:12 AM	#1872
Bunpei diyAudio Member Join Date: Aug 2008	Does anyone try any synchronous configuration of I2S for ES9018, with such lower MCLK frequency range as 11. 2896 MHz, or 22.5792 MHz for fs=44.1 kHz source? I just tried 22.5792 MHz synchronous MCLK input to master clock XI pin of ES9018 and found it feasible enough for from fs=44.1 kHz to fs=352.8 kHz sources under OSF = OFF conditions.

3rd July 2011, 12:15 PM	#1873
wktk_smile diyAudio Member Join Date: Dec 2009 Location: Kyoto	Hi, Bunpei I' ve just tried feeding 11.2896mhz to BuffaloII directly from QA-550's XO pin after reading your post. It works very well I found it gives better soundstage and 3D imaging. Quite enjoyable although it can play only 16bit/44.1khz wav files.

7th July 2011, 04:26 PM	#1875
Bunpei diyAudio Member Join Date: Aug 2008	Hi, wktk_smile, Thank you very much for your replies to my question! Yes, you are correct. As far as a master clock frequency > 192 fs, OSF mode can be ON. Have you already tried, 90.3168 MHz(44.1 kHz x 2048) or 98.3040 MHz(48 kHz x 2048) synchronous master clock of SDTrans384 with your Buffalo II? Bunpei

7th July 2011, 09:07 PM	#1876
wktk_smile diyAudio Member Join Date: Dec 2009 Location: Kyoto	Yep, I received EEPROM for synchronous ES9018 from Chiaki san. It's really astonishing. I will report to "MicroSD memory card Transport Project" thread.

2nd September 2011, 01:19 AM	#1879
Takaji diyAudio Member Join Date: Jul 2011	Good news to those who wanted to see the ES9018 DAC datasheet! I spoke with Bryan at Shaw Electronics (shawelectronics.com), the US distributor for the chip... he said that 6 months ago the ES9018 datasheet was taken off the non-disclosure agreement list, so now you just have to request it and he will send it to you. So, if you want the ES9018 DAC datasheet, kindly email Bryan at "bryan at shawelectronics dot com" and ask!

2nd September 2011, 02:06 AM	#1880
qusp is choosing a less facetious title... diyAudio Member Join Date: Oct 2009 Location: Brisbane, Australia	ermm, this has been public knowledge for quite a while and has been posted in here already, thanks though =)