Sound of PCM63P is no good without backward synchronization throw amanero and spdif. I reached best results with usb interface (that I show earlier) and oscillator, that exceed Crystek oscillator (the measurement in attach). But PCM63P is sound too sweet and slow for me than a delta-sigma DACs. That is why i want to try ES9038PRO
Attachments
Originally Posted by Virtuez
1: CAAD: Option, 1,2,4 and 5.
2: CAAD: Option: 1,2,3,4,5 and complete Tube output
3. gcolombo: Option: 1,2 and 3.
4. akltam Option 1,2,5
5. gcolombo: Option, 1,2,
6. Researcher: options 1,2,4,5 (i dont need usb)
7. hbit: Option 1, 2 and one pair LL1684 PCB ( L and R) (25$)
8.Tuanvq: 1,2,3
9. ivigueras: option 1,2
10. jpduarte: Option 5
11. Virtuez: Option 1,2
12. Dariedel2: Option 1 and one pair of the new super I/V PCBs (I only need for balanced output). I do NOT need option 2 because I use JRiver only for volume and I don't switch any sources.
13. Posterprofi: Option 1,2,5
.....
15. End
1: CAAD: Option, 1,2,4 and 5.
2: CAAD: Option: 1,2,3,4,5 and complete Tube output
3. gcolombo: Option: 1,2 and 3.
4. akltam Option 1,2,5
5. gcolombo: Option, 1,2,
6. Researcher: options 1,2,4,5 (i dont need usb)
7. hbit: Option 1, 2 and one pair LL1684 PCB ( L and R) (25$)
8.Tuanvq: 1,2,3
9. ivigueras: option 1,2
10. jpduarte: Option 5
11. Virtuez: Option 1,2
12. Dariedel2: Option 1 and one pair of the new super I/V PCBs (I only need for balanced output). I do NOT need option 2 because I use JRiver only for volume and I don't switch any sources.
13. Posterprofi: Option 1,2,5
.....
15. End
Originally Posted by Virtuez
1: CAAD: Option, 1,2,4 and 5.
2: CAAD: Option: 1,2,3,4,5 and complete Tube output
3. gcolombo: Option: 1,2 and 3.
4. akltam Option 1,2,5
5. gcolombo: Option, 1,2,
6. Researcher: options 1,2,4,5 (i dont need usb)
7. hbit: Option 1, 2 and one pair LL1684 PCB ( L and R) (25$)
8.Tuanvq: 1,2,3
9. ivigueras: option 1,2
10. jpduarte: Option 5
11. Virtuez: Option 1,2
12. Dariedel2: Option 1 and one pair of the new super I/V PCBs (I only need for balanced output). I do NOT need option 2 because I use JRiver only for volume and I don't switch any sources.
13. Posterprofi: Option 1,2,5
14. chi0001: Option: 1,2,5.
15. End
1: CAAD: Option, 1,2,4 and 5.
2: CAAD: Option: 1,2,3,4,5 and complete Tube output
3. gcolombo: Option: 1,2 and 3.
4. akltam Option 1,2,5
5. gcolombo: Option, 1,2,
6. Researcher: options 1,2,4,5 (i dont need usb)
7. hbit: Option 1, 2 and one pair LL1684 PCB ( L and R) (25$)
8.Tuanvq: 1,2,3
9. ivigueras: option 1,2
10. jpduarte: Option 5
11. Virtuez: Option 1,2
12. Dariedel2: Option 1 and one pair of the new super I/V PCBs (I only need for balanced output). I do NOT need option 2 because I use JRiver only for volume and I don't switch any sources.
13. Posterprofi: Option 1,2,5
14. chi0001: Option: 1,2,5.
15. End
Originally Posted by Virtuez
1: CAAD: Option, 1,2,4 and 5.
2: CAAD: Option: 1,2,3,4,5 and complete Tube output
3. gcolombo: Option: 1,2 and 3.
4. akltam Option 1,2,5
5. gcolombo: Option, 1,2,
6. Researcher: options 1,2,4,5 (i dont need usb)
7. hbit: Option 1, 2 and one pair LL1684 PCB ( L and R) (25$)
8.Tuanvq: 1,2,3
9. ivigueras: option 1,2
10. jpduarte: Option 5
11. Virtuez: Option 1,2
12. Dariedel2: Option 1 and one pair of the new super I/V PCBs (I only need for balanced output). I do NOT need option 2 because I use JRiver only for volume and I don't switch any sources.
13. Posterprofi: Option 1,2,5
14. chi0001: Option: 1,2,5, one pair LL1684 PCB ( L and R)
15. End
1: CAAD: Option, 1,2,4 and 5.
2: CAAD: Option: 1,2,3,4,5 and complete Tube output
3. gcolombo: Option: 1,2 and 3.
4. akltam Option 1,2,5
5. gcolombo: Option, 1,2,
6. Researcher: options 1,2,4,5 (i dont need usb)
7. hbit: Option 1, 2 and one pair LL1684 PCB ( L and R) (25$)
8.Tuanvq: 1,2,3
9. ivigueras: option 1,2
10. jpduarte: Option 5
11. Virtuez: Option 1,2
12. Dariedel2: Option 1 and one pair of the new super I/V PCBs (I only need for balanced output). I do NOT need option 2 because I use JRiver only for volume and I don't switch any sources.
13. Posterprofi: Option 1,2,5
14. chi0001: Option: 1,2,5, one pair LL1684 PCB ( L and R)
15. End
Information IV DAC-ES9038PRO
Hello friends!
I know you are anxious!
We are taking the time to test the iv for 9038pro, we work very hard 12 hours a day.
So I did not go online. Looking forward to sympathy for me.
I have tested 10 different designs, however, we find the design below suitable and have the best sound.
It has a balanced output - directly from LL1684, but the amplifier is small, about once.
The output is not needed by using a large amplifier tube ~ about 3 VRMS
Please wait and pay for the DAC kit, and have fun waiting for the best results, please see the circuit diagram. The circuit diagram has a few points I did not publish.
thanks a lot!
Hello friends!
I know you are anxious!
We are taking the time to test the iv for 9038pro, we work very hard 12 hours a day.
So I did not go online. Looking forward to sympathy for me.
I have tested 10 different designs, however, we find the design below suitable and have the best sound.
It has a balanced output - directly from LL1684, but the amplifier is small, about once.
The output is not needed by using a large amplifier tube ~ about 3 VRMS
Please wait and pay for the DAC kit, and have fun waiting for the best results, please see the circuit diagram. The circuit diagram has a few points I did not publish.
thanks a lot!
Attachments
update list.
1: CAAD: Option, 1,2,4 and 5.
2: CAAD: Option: 1,2,3,4,5 and complete Tube output
3. gcolombo: Option: 1,2 and 3.
4. akltam Option 1,2,5
5. gcolombo: Option, 1,2,
6. Researcher: options 1,2,4,5 (i dont need usb)
7. hbit: Option 1, 2 and one pair LL1684 PCB ( L and R) (25$)
8.Tuanvq: 1,2,3
9. ivigueras: option 1,2
10. jpduarte: Option 5
11. Virtuez: Option 1,2
12. Dariedel2: Option 1 and one pair of the new super I/V PCBs (I only need for balanced output). I do NOT need option 2 because I use JRiver only for volume and I don't switch any sources.
13. Posterprofi: Option 1,2,5
14. chi0001: Option: 1,2,4,5, one pair LL1684 PCB ( L and R), and t-super i/v output.
15. End
1: CAAD: Option, 1,2,4 and 5.
2: CAAD: Option: 1,2,3,4,5 and complete Tube output
3. gcolombo: Option: 1,2 and 3.
4. akltam Option 1,2,5
5. gcolombo: Option, 1,2,
6. Researcher: options 1,2,4,5 (i dont need usb)
7. hbit: Option 1, 2 and one pair LL1684 PCB ( L and R) (25$)
8.Tuanvq: 1,2,3
9. ivigueras: option 1,2
10. jpduarte: Option 5
11. Virtuez: Option 1,2
12. Dariedel2: Option 1 and one pair of the new super I/V PCBs (I only need for balanced output). I do NOT need option 2 because I use JRiver only for volume and I don't switch any sources.
13. Posterprofi: Option 1,2,5
14. chi0001: Option: 1,2,4,5, one pair LL1684 PCB ( L and R), and t-super i/v output.
15. End
Last edited:
Are you planning to make PCB available?
QuangHao,
Are you planning to make a PCB for this output stage available? Will it be able to ship with the DACs? Can you post a parts list?
Thanks,
Doug
QuangHao,
Are you planning to make a PCB for this output stage available? Will it be able to ship with the DACs? Can you post a parts list?
Thanks,
Doug
About Design IV for ES9038PRO
Hi friends.
At first I sincerely apologize to you for the long absence time.
I spent all my time designing the ES9038 output.
Yes, yes, it is really hard and difficult and a huge hassle when looking for output for ES9038PRO because:
1. ES9038PRO current consumption for Analog is too large, up to 90mA per channel (3.3V-90mA), 3.6 times ES9018S (25mA), twice the ES9028PRO (47mA).
This, which led to the output design is TUBE, always has bumps when the DAC off, it produces huge clicks like clicks, or poping relay, which can not be processed.
2. ES9038PRO has a very low output impedance of 205 ohm per channel, 4 channel impedance // produces 50 Ohm output.
3. ES9038PRO has very high heat output, if using low IV, will cause chip overload phenomenon.
4. The standard ESS output design always requires a sample message,
To reduce the line and create a virtual GND, also mistakenly limiting the output click noise. It is difficult to directly connect GND DAC to GND i / V directly.
5. ES9038PRO has overcome the flawed disadvantage - (ES9018S) ie low bass, 9038 it has perfected the audio resolution.
Here are my tests with preliminary comments for each design, Here, just my personal views, and some comments from my friends upon hearing them. I have made about 15 different I / V designs, from opam, to transistors, and electronic lights, transformers. I draw 10 typical designs:
1. Opam: Design 1 + 2
Full sound, rich and powerful bass, midrange slightly dry, hard, treble sound too bright, many details too obvious.
Music space and dynamics are very good, very good for classical music, but many listeners will feel tired, and the singer's vocals are not sweetly inspirational.
Advantages: simple, inexpensive, easy to carry!
2. Non-feedback transistors: 3 + 4 design
Sound: Basically very natural, but treble slightly less opam, slightly better tones, bass is like the opam. To make the tones and overall sound better. There should be electronic buffers.
Advantages: Simple, inexpensive, easy to carry, and no feedback, so the sound is more pleasant, closer to nature.
3. Tube designs: Sound is easier to hear, softer and more pronounced.
However, they are always subjected to large explosions when the DAC is switched off, it has an output bump, which can not be treated.
4. Transformer Design + Tube
Sounds a lot better than just using the Tube, Maybe ES9038 suitable for output transformer ?? yes, I'm sure
5. Transformer Design + Tube ....
Costly, but sounds great all over.
Yes, please take a look at my pictures and comments. Thanks and please be waiting!
Quanghao
Hi friends.
At first I sincerely apologize to you for the long absence time.
I spent all my time designing the ES9038 output.
Yes, yes, it is really hard and difficult and a huge hassle when looking for output for ES9038PRO because:
1. ES9038PRO current consumption for Analog is too large, up to 90mA per channel (3.3V-90mA), 3.6 times ES9018S (25mA), twice the ES9028PRO (47mA).
This, which led to the output design is TUBE, always has bumps when the DAC off, it produces huge clicks like clicks, or poping relay, which can not be processed.
2. ES9038PRO has a very low output impedance of 205 ohm per channel, 4 channel impedance // produces 50 Ohm output.
3. ES9038PRO has very high heat output, if using low IV, will cause chip overload phenomenon.
4. The standard ESS output design always requires a sample message,
To reduce the line and create a virtual GND, also mistakenly limiting the output click noise. It is difficult to directly connect GND DAC to GND i / V directly.
5. ES9038PRO has overcome the flawed disadvantage - (ES9018S) ie low bass, 9038 it has perfected the audio resolution.
Here are my tests with preliminary comments for each design, Here, just my personal views, and some comments from my friends upon hearing them. I have made about 15 different I / V designs, from opam, to transistors, and electronic lights, transformers. I draw 10 typical designs:
1. Opam: Design 1 + 2
Full sound, rich and powerful bass, midrange slightly dry, hard, treble sound too bright, many details too obvious.
Music space and dynamics are very good, very good for classical music, but many listeners will feel tired, and the singer's vocals are not sweetly inspirational.
Advantages: simple, inexpensive, easy to carry!
2. Non-feedback transistors: 3 + 4 design
Sound: Basically very natural, but treble slightly less opam, slightly better tones, bass is like the opam. To make the tones and overall sound better. There should be electronic buffers.
Advantages: Simple, inexpensive, easy to carry, and no feedback, so the sound is more pleasant, closer to nature.
3. Tube designs: Sound is easier to hear, softer and more pronounced.
However, they are always subjected to large explosions when the DAC is switched off, it has an output bump, which can not be treated.
4. Transformer Design + Tube
Sounds a lot better than just using the Tube, Maybe ES9038 suitable for output transformer ?? yes, I'm sure
5. Transformer Design + Tube ....
Costly, but sounds great all over.
Yes, please take a look at my pictures and comments. Thanks and please be waiting!
Quanghao
Attachments
Last edited:
4. Transformer Design + Tube
Sounds a lot better than just using the Tube, Maybe ES9038 suitable for output transformer ?? yes, I'm sure
5. Transformer Design + Tube ....
Costly, but sounds great all over.
Yes, please take a look at my pictures and comments. Thanks and please be waiting!
Quanghao[/QUOTE]
Quanghao,
So it looks like #4 and #5 say the same thing but are they different?
The pictures show the "super v/I" with the LL1684 transformer. Is that still a good option?
I see the new "T super I/V" now uses the LL1674. Is the LL1684 not possible with that design?
Finally, if I am not worried about bass, what output would you recommend? (I will be using this for mid-range and tweeter if a bi-amped system).
Thanks,
Doug
Sounds a lot better than just using the Tube, Maybe ES9038 suitable for output transformer ?? yes, I'm sure
5. Transformer Design + Tube ....
Costly, but sounds great all over.
Yes, please take a look at my pictures and comments. Thanks and please be waiting!
Quanghao[/QUOTE]
Quanghao,
So it looks like #4 and #5 say the same thing but are they different?
The pictures show the "super v/I" with the LL1684 transformer. Is that still a good option?
I see the new "T super I/V" now uses the LL1674. Is the LL1684 not possible with that design?
Finally, if I am not worried about bass, what output would you recommend? (I will be using this for mid-range and tweeter if a bi-amped system).
Thanks,
Doug
LL1684 can go up to 2V rms.
Because the sound of the transformer creates the best bass, it's thick and lowers the mid.
Therefore, I need to add the tube behind the transformer. The transformer output impedance is also quite large.
thanks you advice!
quanghao