• Disclaimer: This Vendor's Forum is a paid-for commercial area. Unlike the rest of diyAudio, the Vendor has complete control of what may or may not be posted in this forum. If you wish to discuss technical matters outside the bounds of what is permitted by the Vendor, please use the non-commercial areas of diyAudio to do so.

DAC-END R (ES9018) full assembled board

Status
Not open for further replies.
Jump to Latest
#641
Hi Quanghao,

I've just paid the remaining half of my order (USD 455) and the shipping costs (USD 127 for FedEx).
Have you been able to change the AES/EBU to an additional Toslink?
Thank you very much, looking forward to receiving this DAC!

Matt
 
#642
So will be necessary some listen tests to check the best configuration.
Click to expand...

Thanks Andrea, it's clear now.

I'm only interested in the DAC SE outputs, so now I wonder which one is best:
1) ES9018 balanced -> 10-20ohm I/V resistor -> unbalancer transformer/tubes -> tube output
2) ES9018 SE -> 10 I/V resistor -> tube output

ES9018 in SE looks like the most simple, but is there any advantage in using the ES9018 in balanced output when going to a SE output stage ?

Regards,
Danny
 
#643
output stage consideration - part2

Here some output stages to test:

1) Original ES9018 schematic for evaluation - active IV with feedback (balanced)
Common op-amp configuration
2) Actual op-amp module
used also in Mark Levinson no. 380 and published on OPA627 datasheet as High Speed Instrumentation Amplifier (balanced to use in voltage or current mode with passive IV)
3) Lundahl LL1684 (balanced in voltage mode)
4) Satri design (not suggested)
5) AD844 design (not suggested)
6) My design based on Phase Tech HD-7A (balanced current mode)
7) Raleigh Audio Line Stage clone with K & K Audio Basic CCS modules (balanced current mode with passive IV)
8) DAC End 2 I/V - SE with 5687 or E182CC by Quanhao (un-balanced current mode with passive IV)

I should test many of these in the next days.
 

Attachments

  • Out_ES9018_evaluation.gif
    Out_ES9018_evaluation.gif
    26.2 KB · Views: 724
  • OpAmp_ver4a.gif
    OpAmp_ver4a.gif
    20.5 KB · Views: 714
  • Out_LL1684.gif
    Out_LL1684.gif
    10.3 KB · Views: 673
  • Out_Satri_bad.gif
    Out_Satri_bad.gif
    18 KB · Views: 672
  • Out_AD844_bad.gif
    Out_AD844_bad.gif
    11.7 KB · Views: 654
  • Raleighaudio2.jpg
    Raleighaudio2.jpg
    34.9 KB · Views: 296
  • Out_The_perfect_IVa.gif
    Out_The_perfect_IVa.gif
    16.4 KB · Views: 315
Last edited:
#654
Hi Quanghao,

Thank you for all your hard work.
I've received ES9018 DAC kits on 1st June.
I hope that you should provide a detailed instructions for assembling your ES9018 KITS.
- cable wiring
- jumper setting
- remote control function
- precautions
- troubleshoot
- etc...

Thank you
 
Status
Not open for further replies.
Top Bottom