Home > DIY HiFi > ES9018 “DAC-END R” Fully Assembled DAC

ES9018 “DAC-END R” Fully Assembled DAC

February 19, 2013 Leave a comment Go to comments

Updated 5/9/13

Discussion link: diyaudio

Design link: Audio Design Guide

This year brought two brand new implementations of the Sabre32 ES9018 DAC to the diy community. One is the bare-bones $99 ES9018 board from diyinhk and the other is a fully assembled board from Quang Hao-Andrea, the “DAC-END R”.  There is a group-buy going on here: [link].

Joining the Buffalo DAC and the Acko DAC, there is now a version for every taste, budget and diy capability.  It’s never been a better time for the diyer.

The DAC-END-R ES9018 is fully assembled including the power supplies. All you need to add is a transformer and the input connections. There is even a “plug & play” header and mounting holes for the Amanero USB/DSD interface. In effect, this is not quite “diy” as it can be ordered fully functional with power supply and enclosure. But it is also not a commercial offering since it is currently a “diy group-buy” project.

I was able to get a hold of a prototype board to test it out. As can be seen the photos, the finish and workmanship is a combination of machine reflow and manual soldering. Quang Hao indicates that the production board will be totally machine manufactured for a fully professional finish.


Choice of components is not for low cost, but high performance. Resistors are MELF [link]. I’ve seen these used in the WEISS 202 DAC [link]


The all popular Crystek CCHD-950, 100 MHz. Using this speed, the max specified in the datasheet allows noise-free playback of 384KHz sample rate material.


The board has built-in passive I/V resistors (the production board will have MELF resistors instead of the Caddock resistors shown here). The small 10 ohm allows the DAC to work “closer” to current mode (making the voltage swing smaller) improving its THD performance. Here is a post explaining the value of small value passive I/V: [link]

The DAC can operate in both current and voltage modes. With either mode, you can also bypass these resistors by removing the jumpers (e.g., J8) and use the DAC in proper current mode (fixing its voltage) or in full voltage mode (allowing full voltage swing) for direct connection to an amplifier.


Here is a photo of a production board



The DAC board comes with nine power supplies:


Two Pre-regulators based on the LT1963 high-power low noise LDOs. These regulate the rectified ~9V DC from the transformers and provide the “raw” 5V for the analog sections and the “raw” 5V for the digital sections


Five shunt regulators based on the Ti/BB OPA2134 opamp:

  • Two shunt regulators for the 3.3V Analog R and L
  • Two shunt regulators for the 1.2V Analog R and L
  • The fifth shunt provides the 3.3V digital for the clock


The core 1.2 digital supply is based on the LT1963 low noise LDO.


There is also an additional digital 3.3v (yet another LT1963 in a different package) regulator for the controller board and LCD display and also as a second pre-regulator to the 1.2V digital supply


I can tell Quang Hao is a fan of the LT1963 regulator. Every package variation has been implemented in this board🙂

All the regulators can be bypassed with the built-in jumpers (in case you wish to try other regulators).


Included with the DAC board is a controller board with LCD display and infrared remote sensor. This is aimed at the “non-tinkerer” (unlike my Hifiduino code :-))

There are 5 buttons with the following functions

  • Increase volume (up button)
  • Decrease volume (down button)
  • Mute (center button)
  • Switch input forward (right button)
  • Switch input reverse (left button)


The LCD displays volume level,  input selection, and the sample rate when there is lock on a signal.


On the left of the LCD is the IR sensor. I have not purchased the remote (widely available in eBay) so I have not used the remote functions. I suppose it does the same as the buttons.

The board has its own power supply if you do not wish to power it with the 3.3V supply in the DAC board (there is a jumper to disable powering the control board).


I am happy that Quang Hao/Andrea decided to follow my post about leveraging the automatic detection and internal mux capability of the Sabre DAC [link]. As such, the DAC can switch inputs by just programming the internal registers without the need of any external circuitry. This makes switching inputs “totally transparent” without having the signal go through relays, additional wiring or switches.

I tested this configuration  with an optical SPDIF connection and with the Amanero I2S/DSD connection both connected to the DAC board. The SPDIF and the Amanero board had their signals live at all times (meaning that if I switch to either one, there was a lock to the signal). The source switching worked flawlessly. And no problems were observed. There was some concerns about this not fully working, but as implemented and tested, it works perfectly.

The DAC can accommodate two additional spdif inputs: a coax and an AES/EBU each with the appropriate isolation transformer and level converter as shown below:

DE-R inputs

This is a very nice implementation of “smart” input selection.


Voltage-mode output

In this initial test, I am using the DAC-END R DAC in voltage-mode output, connecting directly to the amplifier and using the digital volume control in the DAC.

For proper voltage-mode, I removed the jumpers for the on-board passive I/V (10 ohm) resistor to get the full voltage swing. Leaving the 10 ohm resistors connected, the output level will be much reduced.

Note: I also got the output boards, but I need to get a proper transformer first… I will test them later.

Playing tracks in iTunes and Foobar

Admittedly, I am not one that can spend time focusing on minute differences or having the right words to explain the differences. I like to rather enjoy the listening session and pick up details as they come. I can say is that this is also a very good sounding DAC and it is an excellent implementation of the ES9018 Sabre DAC both from the technical and sonic point of view.

After listening to a severak familiar tracks, the DAC sounded wonderfully. The familiar sound was there. All the familiar details were there. Nothing was missing. (As most readers can figure out, I’ve been using another excellent implementation of the Sabre32DAC for a long while already)

I tried the optical output from the Musiland 03US and also the I2S/DSD output from the Amanero USB board. In the controller board, you just select “optical” or “USB” to select the desired input source. I was very happy to see the switching between SPDIF and SERIAL (I2S/DSD) working – Something I theorized but never tried.

I tried several sample rates through the SPDIF interface and also tried up to 352K/384K sample through the I2S interface. Also tried DSD-64 and DSD-128 through the same serial interface (don’t have any DSD higher than 128). Every sample rate and format was supported without a glitch (Some may recall that with the 80Mhz clock, playing 352K and 384K had noise glitches)

All in all, I felt the DAC-END R implementation excels in the top end. Sometimes I felt a more detailed presentation in the top end as compared to my memory of familiar tracks. No doubt the use of the faster clock and the use of shunt regulators throughout had something to do with it.


Here are some photos of the production boards for the diyaudio group-buy I received (the photos) from Mr QuangHao. Other photos from users receiving their boards/dacs.




Notice that the oscillator has been replaced with a different one:


According to QuangHao, Mouser did not deliver the CCHD-950 he ordered, so he had to purchase CCHD-575 [link]

Comparing the phase noise between the two shows that the CCHD-575 is actually slightly better than the CCHD-950 in terms of phase jitter:


Here are some photos I pulled from diyaudio. Looking very nice!




Very clean design. A single custom transformer provides the 4 required voltages.



The display is now a nicer blue/white LCD…







DAC with power cable


Board jumper configuration


  1. Gerhard
    April 26, 2013 at 17:40

    A worthwhile addition to your comparative presentations of DIY ES9018 boards might be the implementation of German company Digelaty:


    • BlgGear
      April 27, 2013 at 07:21

      I would welcome a write up if anyone has experience with the board.

  2. Corpius
    October 5, 2014 at 20:00

    Do you perhaps know which type of IC is used for converting consumer level SPDIF to TTL? In the smart input configuration schematics it’s marked as IC2.

    • BlgGear
      October 7, 2014 at 17:49

      Check the posts on Buffalo II, there I show the specific part

  3. Anonymous
    January 17, 2015 at 09:19

    I would like to get 8 channel output. Is this possible?

  4. ML
    November 29, 2015 at 13:53

    I am not familiar with the 9018 dac chip but I am interesting about “SMART INPUT CONFIGURATION”.
    I see at the each spdif input a circuit with a pulse transformer and 74HCU04 perhaps. What kind of spdif signal is the output, it is normal 500mVpp or TTL Level? Is this provide a buffer signal?
    What type of pulse TR is needed?
    I search for the best spdif input circuit for the WM8805 receiver.

  5. September 14, 2016 at 17:05

    frau befriedigen

  6. September 14, 2016 at 19:09

    metodo del ritmo para mujeres irregulares

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