Sold.
This is a NOS I2S to simultaneous mode TDA1540 dac board designed by Miro. I have built two boards, and i am only keeping one board for my own system. I bought enough spares to populate 5 boards (MOQ by JLCPCB 😀 ) but i only managed to complete two at this moment. It is built with care and high quality parts, tested to work with stability. Your own PSU and i2s source is required to complete this DAC for it to sing.
The DEM decoupling film caps are a mix of good quality Shinyei and Rubycon. PSU Decoupling caps are good quality Panasonic FM (even lower impedance than FC series), bypassed with Epcos film caps. Resistors used are either Vishay or KOA. IV op amp is a pair of genuine OPA604 , which i have kept for years but they are totally unused and only for tests of this DAC.
This sale also includes a programmed CPLD board (the blue board with Alter Max II chip). It receives i2s signal from your source, converts it to offset-binary data needed for TDA1540 DAC. The VHDL code is written by Miro, and i have loaded the program to the CPLD board so that you don't need to bother about programming issues. Miro has a tutorial on how to program the CPLD board if you are interested to find out more, although this has been done by me.
https://electrodac.blogspot.com/p/tutorial-how-to-programm-altera-cpld.html
The CPLD board has been wired to the DAC inputs by soldering. Trust me, it is more reliable and sound better than just using Dupont cables with connectors. I had occasional weird noises when i used those because i find that sometimes the connection is not tight fit and moved a little. With the signals at those frequencies, loose connections is a problem.
So basically everything is wired up and tested, and will be shipped as such. Get a i2s source of your own, some psu boards and transformers, connectors and box it up for a complete dac.
This dac is designed by Miro and more info can be found here :
https://www.diyaudio.com/community/...s-input-nos-r-2r.354078/page-309#post-7272246
Miro also designed the PSU for this dac (not included in this sale):
https://www.diyaudio.com/community/...s-input-nos-r-2r.354078/page-309#post-7272253
Please study the power supply requirement carefully if you intend to use your own psu design.
Things to note :
1. All components, including the pair of TDA1540 chips and op amp are new, which is only used for the testing of this DAC.
2. Do read the design information provided above. I used all the information to complete and test the DAC.
3. Although the DAC board has been tested to be working, it is still wise to know and follow the start up instructions in the link provided above : https://www.diyaudio.com/community/...s-input-nos-r-2r.354078/page-309#post-7272246
4. This sale is for the TDA1540 DAC board + CPLD board only. PSU and USB-i2s board in the pictures below is for illustration only.
Price for the working DAC and CPLD board (as boxed in red in the picture attached below) is 220USD, including shipping worldwide registered. And as usual i will buy coffee for Miro. 🙂
This is a NOS I2S to simultaneous mode TDA1540 dac board designed by Miro. I have built two boards, and i am only keeping one board for my own system. I bought enough spares to populate 5 boards (MOQ by JLCPCB 😀 ) but i only managed to complete two at this moment. It is built with care and high quality parts, tested to work with stability. Your own PSU and i2s source is required to complete this DAC for it to sing.
The DEM decoupling film caps are a mix of good quality Shinyei and Rubycon. PSU Decoupling caps are good quality Panasonic FM (even lower impedance than FC series), bypassed with Epcos film caps. Resistors used are either Vishay or KOA. IV op amp is a pair of genuine OPA604 , which i have kept for years but they are totally unused and only for tests of this DAC.
This sale also includes a programmed CPLD board (the blue board with Alter Max II chip). It receives i2s signal from your source, converts it to offset-binary data needed for TDA1540 DAC. The VHDL code is written by Miro, and i have loaded the program to the CPLD board so that you don't need to bother about programming issues. Miro has a tutorial on how to program the CPLD board if you are interested to find out more, although this has been done by me.
https://electrodac.blogspot.com/p/tutorial-how-to-programm-altera-cpld.html
The CPLD board has been wired to the DAC inputs by soldering. Trust me, it is more reliable and sound better than just using Dupont cables with connectors. I had occasional weird noises when i used those because i find that sometimes the connection is not tight fit and moved a little. With the signals at those frequencies, loose connections is a problem.
So basically everything is wired up and tested, and will be shipped as such. Get a i2s source of your own, some psu boards and transformers, connectors and box it up for a complete dac.
This dac is designed by Miro and more info can be found here :
https://www.diyaudio.com/community/...s-input-nos-r-2r.354078/page-309#post-7272246
Miro also designed the PSU for this dac (not included in this sale):
https://www.diyaudio.com/community/...s-input-nos-r-2r.354078/page-309#post-7272253
Please study the power supply requirement carefully if you intend to use your own psu design.
Things to note :
1. All components, including the pair of TDA1540 chips and op amp are new, which is only used for the testing of this DAC.
2. Do read the design information provided above. I used all the information to complete and test the DAC.
3. Although the DAC board has been tested to be working, it is still wise to know and follow the start up instructions in the link provided above : https://www.diyaudio.com/community/...s-input-nos-r-2r.354078/page-309#post-7272246
4. This sale is for the TDA1540 DAC board + CPLD board only. PSU and USB-i2s board in the pictures below is for illustration only.
Price for the working DAC and CPLD board (as boxed in red in the picture attached below) is 220USD, including shipping worldwide registered. And as usual i will buy coffee for Miro. 🙂
Last edited:
This DAC sounds rich, and packs a punch in the bass. Has very good control of the music.
Attachments
Last edited:
