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DAC-END R (ES9018) full assembled board

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#1,061
DAC shield
Material: Copper-Nickel-Zinc alloy C7521
added myself for the shield:

1. sipo75
2. Domi_78
3. bobkojek
4. Erlend Sæterdal
5. danielkol*2
7. kmajjo * 6
8. xtomm
9. MattMax
10. Gricko
11. Luizl
12. Misterrogers
13. randytsuch
14: CAAD
15: glt
16: axeexa(antony_shih)
17: bertchai
18: TarnishedEars
19: smoothquark (with complete DAC)
20: rliyung/raoul
21: masterkey (with complete DAC)
22: danny_66
23: yildiray
24: Boxi80
25: halook
 
#1,063
Hi Halook, Quanghao and Danny_66,
Halook said:
I gave up using the coaxial input. USB works fine for all frequencies including DSD playback via Win7+JRiver or Win8+Jriver.:cheeky:
Click to expand...

- Finaly, via XP+Jriver, my USB Amanero board also works fine with the DAC for all these frequencies : 44.1Khz (44), 48Khz, 88.2Khz (88), 96Khz (95), 192Khz (191) and 352.8Khz (352), (displayed frequency).
- Did not try 176.4Khz and 384Khz but I am confident...

- The problem is that all my music is served via a SqueezeBox Touch. So I absolutely need this DAC locks up to 192 KHz on coaxial or AES/EBU inputs.

Thank you for your help.
 
Last edited:
#1,064
DAC shield
Material: Copper-Nickel-Zinc alloy C7521
added myself for the shield:

1. sipo75
2. Domi_78
3. bobkojek
4. Erlend Sæterdal
5. danielkol*2
7. kmajjo * 6
8. xtomm
9. MattMax
10. Gricko
11. Luizl
12. Misterrogers
13. randytsuch
14: CAAD
15: glt
16: axeexa(antony_shih)
17: bertchai
18: TarnishedEars
19: smoothquark (with complete DAC)
20: rliyung/raoul
21: masterkey (with complete DAC)
22: danny_66
23: yildiray
24: Boxi80
25: halook
26: kgkim * 6

Thanks
 
#1,065
Domi_78 said:
Hi Halook, Quanghao and Danny_66,

- The problem is that all my music is served via a SqueezeBox Touch. So I absolutely need this DAC locks up to 192 KHz on coaxial or AES/EBU inputs.

Thank you for your help.
Click to expand...

Did you try the toslink out of the touch?
Other than USB, Toslink is the only other input I tried, and it works for me at 44 and 96.
 
#1,068
DAC shield:

1. sipo75
2. Domi_78
3. bobkojek
4. Erlend Sæterdal
5. danielkol*2
7. kmajjo * 6
8. xtomm
9. MattMax
10. Gricko
11. Luizl
12. Misterrogers
13. randytsuch
14: CAAD
15: glt
16: axeexa(antony_shih)
17: bertchai
18: TarnishedEars
19: smoothquark (with complete DAC)
20: rliyung/raoul
21: masterkey (with complete DAC)
22: danny_66
23: yildiray
24: Boxi80
25: halook
26: kgkim * 6
27. rredline
 
#1,069
DAC shield:
1. sipo75
2. Domi_78
3. bobkojek
4. Erlend Sæterdal
5. danielkol*2
7. kmajjo * 6
8. xtomm
9. MattMax
10. Gricko
11. Luizl
12. Misterrogers
13. randytsuch
14: CAAD
15: glt
16: axeexa(antony_shih)
17: bertchai
18: TarnishedEars
19: smoothquark (with complete DAC)
20: rliyung/raoul
21: masterkey (with complete DAC)*
22: danny_66
23: yildiray
24: Boxi80
25: halook*
26: kgkim * 6
27. rredline**
28. la1209
 
#1,070
Running ES9018 DAC on first stage

Hi Quanghao,

Yes, I've made two your ES9018 DAC kits.
I've joined a DIYMania.NET which are the amateur community for DIY audio in Korea.
You can find the first one that discuss this:
http://diymania.net/bbs/board.php?bo_table=pj_ES9018&wr_id=3
I'm sorry for being Korean article only, but you'd be simply understand all.
The sound is vey good : well balanced, many information in music.

I also found some problem in your DAC kits.
- SPDIF input is not working with my CD transport using CD-PRO2 module
- when select the button in display PCB, it may not work normally due to chattering
- the output gain is small compared by common audio product.

SPDIF problem: https://www.dropbox.com/s/zx6o0fhlt2liw66/spdif-problem.png
(I hope that you would be look over spdif input schematic again)


The second one:
http://diymania.net/bbs/board.php?bo_table=pj_ES9018&wr_id=13
http://diymania.net/bbs/board.php?bo_table=pj_ES9018&wr_id=18

I added I/V output stage + input transformer + my buffer module + output transformer.
- iv opamp : ad797 dual(first stage) , opa134 dual (second stage)
- line input transformer : maded by pikatron (it obtained from pro audio console^^)
- line output transformer : not known (it also obtained from pro audio console)

The sound is better than first one : it's more natural sound^^

Thank you Quanghao and Andrea for this nice project.

Regards,
David Kim.

 
Last edited:
#1,071
DAC shield:
1. sipo75
2. Domi_78
3. bobkojek
4. Erlend Sæterdal
5. danielkol*2
7. kmajjo * 6
8. xtomm
9. MattMax
10. Gricko
11. Luizl
12. Misterrogers
13. randytsuch
14: CAAD
15: glt
16: axeexa(antony_shih)
17: bertchai
18: TarnishedEars
19: smoothquark (with complete DAC)
20: rliyung/raoul
21: masterkey (with complete DAC)*
22: danny_66
23: yildiray
24: Boxi80
25: halook*
26: kgkim * 6
27. rredline**
28. la1209
29. kimgiin
 
#1,072
kgkim said:
Hi Quanghao,


I also found some problem in your DAC kits.
- SPDIF input is not working with my CD transport using CD-PRO2 module

SPDIF problem: https://www.dropbox.com/s/zx6o0fhlt2liw66/spdif-problem.png
(I hope that you would be look over spdif input schematic again)

Regards,
David Kim.
Click to expand...

I think you found the SPDIF problem that people are having, 10uf is too big a cap, takes too long to charge, which is why the pulses look like that in (3).

Thanks for figuring this out.
I bet if people change that cap to a 0.1 like you recommend, all would be well.

Did you change the cap, and try it again?

Randy
 
#1,075
Welcome to you!.

all you broken chasis and board IV, I will send you one of the damaged components. I'm waiting for the shield, a few days it will be to me.

I will send for you soon! Please be understanding and wait!

Thank you very much! And look forward to ignore failures, errors transporting this!

All of the damage caused by shipping, I will not be compensated Fedex, so I declare very low value to avoid the import tax for you!
 
#1,076
Hi Randy,
randytsuch said:
I think you found the SPDIF problem that people are having, 10uf is too big a cap, takes too long to charge, which is why the pulses look like that in (3). Thanks for figuring this out. I bet if people change that cap to a 0.1 like you recommend, all would be well. Did you change the cap, and try it again?Randy
Click to expand...

Maybe I am wrong...
The two concerned caps are serigraphied C35 (AES/EBU input) and C36 (Coaxial input) and C7 on the schematic :
- These caps are not soldered on the PCB and they are replaced by a strap :scratch1:.
 

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  • C35.jpg
    C35.jpg
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  • C36.jpg
    C36.jpg
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  • Schematic C7.jpg
    Schematic C7.jpg
    18.4 KB · Views: 338
Last edited:
#1,077
Domi_78 said:
Hi Randy,


Maybe I am wrong...
The two concerned caps are serigraphied C35 (AES/EBU input) and C36 (Coaxial input) :
- These caps are not soldered on the PCB and they are replaced by a strap :scratch1:.
Click to expand...

I'm at work now, and from here I can't look at the dropbox files, and I definitely can't look inside my DAC.

Are you saying that instead of C36, there is a wire?
From what I remember, that would short the signal to ground. If that is the case, it definitely won't work.

Try removing the wire?
I think it would work with no cap installed, although it is probably better to have a small cap for filtering in that position.

Randy
 
#1,079
Domi_78 said:
Hi Randy,
- I have attached some pictures to my previous post.
Click to expand...

😕

I thought it was a filter cap, but it's not.
Looks like they made provisions for a cap in case it was required, but then they decided it was not required?

To add a cap, you would need to cut the trace.

What does the "working" circuit look like, in comparison?

BTW, are you able to try toslink, at least to see if that works.
 
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