DAC ES9038 PRO GR 2

quanghao · 2017-05-20 5:13 am

After testing about 15 design IV for ES9038PRO, I selected this design.

Oh, this is my favorite design ever. It won all because:

Its sound: great, the music space is very deep.

The treble is very detailed, slender and very sparkling, magical

Mid is very warm, inspirational, more inspirational, especially vocal of the singer is very sweet, slow.

The bass is deep and powerful, but does not cause headaches. Hear long time not tired

Yes: music space filled the room, the sound treble, mid, bass. All sounds are very balanced, amazing dynamics.

No noise, no hum, no poping relay- click mouse when you switch off DAC. Love.

The speakers on the speakers will not listen a sound like: è è, ù ù .... or hum, hum, u u..at low frequencies below 20Hz - other designs i can see it.

Thank you very much! And I hope you love it like me!
quanghao

quanghao · 2017-05-20 7:39 am

and some image off test
thanks

caad · 2017-05-20 8:26 am

Thank you

quanghao said:
and some image off test
thanks

Hi Quang Hao,
Thank you for spending so much time developing and seaeching for the best IV for the dac.
It really inspire me that you go "all in" for the best sounding IV and without any compromise.

Br
caad

dariedel2 · 2017-05-20 12:14 pm

Quanghao,
Thank you!
I'm looking forward to trying.

Can you post a parts list so we can start looking for the parts? (Including power supply and transformer values)

What is your anticipated schedule to have PCBs ready?

Thanks,
Dariedel2

When

quanghao · 2017-05-21 5:29 am

information ship

Hi all1

I was ship to some day With TNT

https://www.tnt.com/express/en_vn/site/shipping-tools/tracking.html

and list and tracking:

1.IGNACIO -Spain: GE147260791WW

2.PRZEMYSLAW-Poland: Poland

3.COFE BEAN AND TEA-Hongkong : GE147260814WW

4. CRAIG SCHBERT-Ausitralia: GE147260828WW

5.GE147260828WW-USA: GE147260845WW

6.HELMUT BITTER-Germany: Germany

7. KOMSOMOLSKIJ PROSPEKT-RU:GE147261015WW

Thank you very much!
quanghao

quanghao · 2017-05-23 9:43 am

Some pictures: DAC ES9038PRO with T-IV, listen on other sound system, invite you to watch.

Video: https://www.youtube.com/watch?v=jlS92VWmTPM&t=164s

thank you!

quanghao · 2017-05-23 9:53 am

I have made the PCB, When the PCb finish I will inform you!

And here is the experiment with the Lundahl transformer:

LL1676, LL5402, LL1684
thank you!

dariedel2 · 2017-05-23 10:41 am

Quanghao,
Thanks for finishing output design.

I want to confirm my order:
DAC; plus 2 "super V/I" PCBs(left/right); plus PCB for "T-super IV"

I have already sent $500US. Please let me know total amount for order including shipping to USA.

Also can you post parts list for the new t-super I/V?

Thank you,

ivigueras · 2017-05-23 4:55 pm

Hi QuagHao!

The bird has arrived!. But I had no time to test until now.

Thank you!

quanghao said:
Hi all1

I was ship to some day With TNT

https://www.tnt.com/express/en_vn/site/shipping-tools/tracking.html

and list and tracking:

1.IGNACIO -Spain: GE147260791WW

...

Thank you very much!
quanghao

ivigueras · 2017-05-23 5:06 pm

QuangHao,

These 500 ohm Zout is in balanced or SE mode?

And your sound impresions? Balanced or SE?. With or without preamplifier?

quanghao said:
After testing about 15 design IV for ES9038PRO, I selected this design.

Oh, this is my favorite design ever. It won all because:

Its sound: great, the music space is very deep.

The treble is very detailed, slender and very sparkling, magical

Mid is very warm, inspirational, more inspirational, especially vocal of the singer is very sweet, slow.

The bass is deep and powerful, but does not cause headaches. Hear long time not tired

Yes: music space filled the room, the sound treble, mid, bass. All sounds are very balanced, amazing dynamics.

No noise, no hum, no poping relay- click mouse when you switch off DAC. Love.

The speakers on the speakers will not listen a sound like: è è, ù ù .... or hum, hum, u u..at low frequencies below 20Hz - other designs i can see it.

Thank you very much! And I hope you love it like me!
quanghao

quanghao · 2017-05-24 12:22 am

ivigueras said:
QuangHao,

These 500 ohm Zout is in balanced or SE mode?

And your sound impresions? Balanced or SE?. With or without preamplifier?

HI!

under 500 Ohm Z-outs with Tube 6DJ8 in SE mode

The sound with SE without PRE. output direct to Ampli.

thanks

yos75 · 2017-05-24 9:27 am

part vaules

Can you share the resistors and capacitors values as well as B+ you tested?

best regards,
Przememk

quanghao said:
After testing about 15 design IV for ES9038PRO, I selected this design.

Oh, this is my favorite design ever. It won all because:

Its sound: great, the music space is very deep.

The treble is very detailed, slender and very sparkling, magical

Mid is very warm, inspirational, more inspirational, especially vocal of the singer is very sweet, slow.

The bass is deep and powerful, but does not cause headaches. Hear long time not tired

Yes: music space filled the room, the sound treble, mid, bass. All sounds are very balanced, amazing dynamics.

No noise, no hum, no poping relay- click mouse when you switch off DAC. Love.

The speakers on the speakers will not listen a sound like: è è, ù ù .... or hum, hum, u u..at low frequencies below 20Hz - other designs i can see it.

Thank you very much! And I hope you love it like me!
quanghao

quanghao · 2017-05-26 3:12 pm

yos75 said:
Can you share the resistors and capacitors values as well as B+ you tested?

best regards,
Przememk

Hi!

not worry about it, i will post some day!

thanks

bluingreen · 2017-05-26 3:17 pm

How difficult would this be for a first time DIYer with very limited electronics knowledge?

Is it more of a "buy all the parts and screw them together" or do you need to get into soldering etc?

quanghao · 2017-05-26 3:32 pm

bluingreen said:
How difficult would this be for a first time DIYer with very limited electronics knowledge?

Is it more of a "buy all the parts and screw them together" or do you need to get into soldering etc?

may be i can built the kit, and you get all. _ so the DAC finis , you listen it!

thanks your advice!

quanghao

szczemirek · 2017-05-26 4:46 pm

quanghao said:
may be i can built the kit, and you get all. _ so the DAC finis , you listen it!

thanks your advice!

quanghao

DAC sound exellent! Waiting for IV output!

Regards

quanghao · 2017-05-27 12:01 am

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.grec13 fully complete,
Transformer Design + Tube,

thank you all

quanghao · 2017-05-27 3:48 am

szczemirek said:
DAC sound exellent! Waiting for IV output!

Regards

Hi szczemirek!

did you listen it ??
thank your advice!
quanghao

szczemirek · 2017-05-27 7:32 am

quanghao said:
Hi szczemirek!

did you listen it ??
thank your advice!
quanghao

I'm listening DAC with lundal LL168 transformer outputs from previously HQ Reference ES9018 and that sound amazingly

Waiting for list of output IV.

All the best!

quanghao · 2017-05-27 5:42 pm

szczemirek said:
I'm listening DAC with lundal LL168 transformer outputs from previously HQ Reference ES9018 and that sound amazingly
Waiting for list of output IV.

All the best!

Good . The t- supper iv I layout now .
Some day I will post all .
Thank you very much!
Quanghao

DAC ES9038 PRO GR 2

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