Yes, I want to build a DAC

You are free to build our DAC for private use. For this purpose, we've included:

The The schematics and layouts of the PCBs (called SUPLV, SUPHV and DIG).
The assembly manual (low resolution version because of download time, 704kB).
The component lists for SUPLV, SUPHV and DIG.
The construction of the cabinet, and the front plate (the images are not on scale, and all sizes are in cm!).

In our case, the DIY price was about US$ 750 per piece, including cabinet and all cables. This price is based on some price-cuts that we could obtain, because we've ordered components for 25 DACs simultaneously, and we also had some direct links to some component manufacturors.

The information regarding the 3^rd (digital) PCB is not given away. Few reasons are:

It is a 4-layer board, the result of an enormous amount of work.
A 4-layer board can only be made by professionals.
Ordering only one piece for your own will be very expensive.

As a result we offer the board, and some difficult to get components via TentLabs.

All other components are more or less standard. Some other components that might require more effort to obtain:

Digital print (DIG)
- The Mini-Circuits T4-6T RF input transformer.
- Jensen paper-in-oil capacitors (or Audio Note).
Tube print (SUPHV)
- The tube supply transformer (custom-made for this project by Werco, Waalwijk in the Netherlands). It has special supply voltages, and the pinning should fit the PCB design.
- The choke (also custom-made for this project by Werco), because the pinning should fit the PCB design.
- Jensen paper-in-oil capacitors (or Audio Note).
- The Siemens relais, because the pinning should fit the PCB design.
- Tube sockets have been ordered at Audio Note.
- The tubes (the Golden Dragon E88CC is ordered at PM components, the 6X4 at Audio Note who stopped selling NOS tubes).
Supply print (SUPLV)
- The Spitznagel transformer, because the pinning should fit the PCB design.
Cabinet
- The cabinet has been developed in metal, so that it can dispose the heat caused by the tubes.

Ofcourse, other components can be ordered, or other solutions can be thought of. We cannot supply or trace any of these components ourselves, besides the information given, so please don't ask.

Our design is copyrighted. Those among you who have commercial interests are invited to contact Guido Tent.