The noDac it's an USB I2S output filtered with a 4th LPF, attached schematic, there isn't the output coupling capacitor that the value depend of input impedance that for BA-3 47K is 1,69uF but I installed 4,7uF that's the value that I have on hand..
There isn't schematic it's only a low pass filter like posted before, I use Amanero for USB-I2S so output pins:
Pin number 3, I2S DATA/DSD1, Out, Data stream LVCMOS 3.3V 47ohm, channel LEFT
Pin number 5, I2S FSCLK/DSD2 Out, Frame sync LVCMOS 3.3V 47ohm, channel RIGHT
The noDac it's only for DSD, so you only can listen DSD music and have a player that converts all PCM files to DSD files.
Attached an image with other LPF for reference and my filter without output coupling capacitor that value will depend of load (pic don't show the cap because I was using a step-up after the LPF).
Enjoy and welcome to DSD paradise.
N.B. I also dislike flip flops because kill the music so I accept to listen a residual noise like when you play vinyl.
Attachments
Last edited: