ondesx
Head-Fier
- Joined
- Nov 9, 2008
- Posts
- 60
- Likes
- 12
Hi Guys,
After testing several FDA units (Topping, FX802, YJHiFi, etc...) most of them based on STA326 chips, I found a board based on the 333BW circuit, and the idea was to derive a high quality audio DAC-Amplifier for headphones with it...
Here is the board :
https://fr.aliexpress.com/store/pro...108.1000016.1.7f75b2ee6zYumR&isOrigTitle=true
Below are some pictures of the resulting DIY unit...
The audio quality is really amazing for the price of the prototype. Perfect silence without modulation then no noise (the so-called "black background"), very high fidelity of the instruments and voices (I have a "personal" reference...), crystal clear sound and very good dynamics ! In addition, this is a fully balanced unit.
The very important points here are that there isn't neither any DAC nor any Operational Amplifier in this device !... Thus, the path is very short between the digital signal and its audition through the headphones. These are the most important reasons of the very good audio quality obtained with this little board.
My Best
After testing several FDA units (Topping, FX802, YJHiFi, etc...) most of them based on STA326 chips, I found a board based on the 333BW circuit, and the idea was to derive a high quality audio DAC-Amplifier for headphones with it...
Here is the board :
https://fr.aliexpress.com/store/pro...108.1000016.1.7f75b2ee6zYumR&isOrigTitle=true
Below are some pictures of the resulting DIY unit...
The audio quality is really amazing for the price of the prototype. Perfect silence without modulation then no noise (the so-called "black background"), very high fidelity of the instruments and voices (I have a "personal" reference...), crystal clear sound and very good dynamics ! In addition, this is a fully balanced unit.
The very important points here are that there isn't neither any DAC nor any Operational Amplifier in this device !... Thus, the path is very short between the digital signal and its audition through the headphones. These are the most important reasons of the very good audio quality obtained with this little board.
My Best
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