DAC-END R (ES9018)

[quanghao]

DAC-END 32 bit

After the success of DAC-END with Andrea Ciuffoli:
DAC End - the AD1865N-K with single ended vacuum output stage

DAC End 2 - the AD1865N-K with single ended vacuum output stage


Andrea and Quanghao continue to study the DAC, with ES9018 chip, a DAC chip and new potential.

After nearly two years of support from chip manufacturers and work with Andrea, He and I had initial success with the 32-bit DAC, we call it the
DAC-End R.

The sound is Very detailed and balanced, high fidelity, very impressive to me!

These are the first images of the DAC-End R

Thanks you!

 

[quanghao]

Here is the block diagram of the DAC-END R.
Maybe we'll put the volume control , input and output and more.

Output: Tube or IV opam.

Power supply used for DAC , we use many separate Shunt regulater.

 

[qusp]

I really think ESS needs multilayer PCB

 

[abraxalito]

The sound is Very detailed and balanced, high fidelity, very impressive to me!

So the $64,000 question - does it sound better than the AD1865 or is this just to accommodate customers who want more bits?

 

[quanghao]

I really think ESS needs multilayer PCB

I think a good layout design does not need to use the multi-layer PCB.This is my layout!
thank you very much!

 

[quanghao]

So the $64,000 question - does it sound better than the AD1865 or is this just to accommodate customers who want more bits?

It is better technology, and new.

Dac-end) AD1865) close and natural sound quality, it has conquered my system; Nôtday today, I want to find new ones, and there are many options such as USB input,

32-bit DAC-potential,
DAC-END is the standard DAC for my system!

thank you!

 

[abraxalito]

Sounds like a no then - I appreciate your honesty. So you are adopting ESS9018 because its getting harder to obtain AD1865 chips (they're discontinued by ADI AFAIA)?

 

[quanghao]

Sounds like a no then - I appreciate your honesty. So you are adopting ESS9018 because its getting harder to obtain AD1865 chips (they're discontinued by ADI AFAIA)?

yes!
thanks your advance!

Quanghao

 

[quanghao]

I really think ESS needs multilayer PCB

DAC layout is not a simple job, always need separate DGND and GND.Need to calculate properly, and connecting them together, and the energy supply for the function of the chip!

In terms of the multi-layer PCB is the best choice, but with the existing conditions, 2 layer PCB is easier!

thanks

 

[analog_sa]

So the $64,000 question - does it sound better than the AD1865 or is this just to accommodate customers who want more bits?

I think you already know the answer: it sounds much better but not at 44/16 🙂

 

[abraxalito]

I'd be surprised if it sounded better at 88k2/16 🙂

 

[quanghao]

I'd be surprised if it sounded better at 88k2/16 🙂

I have to test

 

[quanghao]

I think you already know the answer: it sounds much better but not at 44/16 🙂

i like passive I/V,

 

[quanghao]

More about the same time adjust the PCB, I was nearly complete.and this is the result of PCB, it gradually as I would like!

 

[quanghao]

and under PCB and GND + Agnd

 

[quanghao]

to day i test R passive IV, i like R IV= 10R for ES9018.
thanks

 

[quanghao]

Here is the layout I just completed, I need to set the test PCB.

PCB including, DAC, IV, and the source,
You can use the IV tube in:
http://www.diyaudio.com/forums/digital-source/216980-universal-hi-end-hybrid-output-stage-dac-2.html

 

[mevang]

Will DAC-End R be offered as a kit or fully assembled and tested?

 

[quanghao]

Will DAC-End R be offered as a kit or fully assembled and tested?

Andrea and me, need test with new design layout, and say you later, please waite me.
But i think kit assembled +tested, it is better for all. You only make iv stage for it.

 

[quanghao]

today, I have completed the 2nd PCB, dac-end 32. everything is good, invite you to see the results!
thank you very much.