Please pay attention:

This kit is offered without the AD1865 chip.


Please note we do not accept orders from Russia and the Republic of Belarus. These countries are forever closed for our products.



We offer a set of assembled boards for the DIY project of the really hi-fi tube DAC.
Please pay attention to the fact that we use much better parts than many famous high-end brands use in their products with price tags like Rembrandt paintings.

You can connect two power cords and listen to music right after unpacking. Next, you can put the DAC to your taste, in a metal or wooden housing.


Here is the custom made abbasaudio DAC 5.0 with the tube single ended output  stage and tube rectifier


AC: 230v  or 115v, pre order.

 

The AD1865 (AD1864)  is a precision 18bit digital to analog converter with ultra low distortion. This  chip  provides an external adjustment of the MSB.

As far as I know, there was no DAC model on the audio market that would use a rectifier tube in the power supply of the digital-to-analog converter chip. We are using the EZ80 to power the AD1865.

Attention! We do not use the mute output relay! The device requires warming up for three minutes, at this time various unpleasent sounds are possible, keep the volume at a minimum! Further, the device can be kept on around the clock.

The tube rectifier gives you an extra degree of freedom in customizing your sound. Needless to say, being powered by a tube rectifier makes the sound smoother, more fluid, and closer to the analog sound.

 Output stage based on 5687 double triode but  E182CC valve may be used also, no rework required.

 

Power cords are not included!

 

We dont use modern high-end ultra pure copper or silver wires inside DAC. We used only an old vintage copper wires taken from klangfilm ,telefunken,siemens sound equipment.  Stranded wires are composed of different varieties of copper strings on a certain principle that leads to the device's ability to transmit the subtlest musical nuances. We believe that it is the only way to recover the lost life in the recorded music.

 

DAC 5.0 features:

 

1. The EZ80 tube rectifier in digital section

2. CS8414 SPDIF receiver 24/96.

3. Shunt voltage regulators based on the germanuim transistors.

4. Vintage and modern audio components are used: allen bradley,philips,telefunken, nichicon, siemens.

5. Board covered with gold and a special varnish for best sound.

6. Stranded wires between PCBs composed of vintage copper wires taken from old sound equipment.

7. pnp I/U convertor  based on the special  low noise HF germanium transistor. As a consequence of this fact, an excellent reproduction of quiet sounds,at -60..-80db level.

8. PIO output capacitors .

9. Shortest signal path. 5687 output stage.

10. NOS mode(non oversampling).

11.  AD1864 or AD1865 can be used

12.Separate power transformers for digital and analog sections.

13.Vintage Germany choke in the power supply of output stage.

14. 5C4S soviet tube rectifier, also can be used  5Y3, 5V4, GZ32


 

The device has an incredible tonal purity and clarity!

The result of our efforts are the deep, accurate bass and the extremely smooth, soft, like analog sound!

 

Output: 2,5v RMS (1khz,0db Full Scale)

 

 

 

 

Installed tubes:

 

1. 5687( VL1,  output stage pcb)

2. 5C4S (VL2 , output stage pcb)

3. EZ80  ( VL1,  5.0   pcb)


Installed chip:


AD1864 K

 

 

What should you do?

 

1. Install all valves.

2. Connect two power cords. The green LED on the digital pcb will light up

3.There is also red LED  which is an indicator of the spdif stream.

No spdif stream – red LED turn on.

 

 

In order to get the best performance from your audio system, you should try different types of tubes. The unit is also very sensitive to cables- power, interlink, spdif. If you are in doubt which cables to choose you can order it from me.

 

If you have any questions, please contact me!