I2S 2:1 switching module

[Markw4]

Good idea. Same result?

BTW which channel is affected with noise, left or right?

 

[merlin el mago]

Right I don't remember for sure because swapped channels several times.

The other Simple DSD Modulator still worse, no music & a lot of noise in both channels in native DSD pass trought mode.

But both sounds pretty good with no noise converting PCM to DSD.

 

[Markw4]

Is this correct:
You are using Amanero?
You have DSD_ON connected between the USB board and the DSD Converter?
You have MUTE connected between the USB board and the DSD Converter?
All the I2S wiring from the USB board to the DSD Converter board is very, very short length?
All the I2S signals from the USB board to the DSD Converter board is a dedicated ground just for that signal?

 

[merlin el mago]

Answers:
-Yes Amanero
-Yes DSD_ON connected between the Amanero & Simple DSD Modulator
-No
-Yes short wire more or less 10cm
-Yes all coaxial wire 50 ohms, including master clock & DSD_ON

 

[merlin el mago]

How works not make sense because converts PCM to DSD fine it's only the native DSD pass trought when is the problem.

 

[Markw4]

A fast 2-channel scope would definitely help to compare the input I2S signals to the output I2S signals. They should look the same, only slightly time shifted. But all should be time shifted by exactly the same amount, in which case there should be no problem.

 

[rehanabid]

Do you sell bare boards or kits or nothing?

Sorry for the late reply, I dont sell either as a routine.

However, I have two free PCBs for this projects.

 

[merlin el mago]

I followed your link but cant' get the schematic & BOM, please could you post here, if isn't very difficult or expensive I will do if you can send me the two free PCBs, thank you.