Do I need an external DDC? or USB HUB?

[Samhunag]

Hello guys,

I recently bought a diy dam1021 dac with amanero combo384.

As far as I know, dam1021 provide galvanic isolation so there is no need to add a usb conditioner(like iso regen, intona etc.).

Just wondering is an external DDC like singxer su-1 necessary for my system? (combo 384 seems to be a decent ddc itself)

Or I just need a good usb hub for signal buffering?

 

[amirm]

Welcome to the forum. Start playing some music and then pause it. Then perform different tasks on your computer. Do you hear any of that? If not, there is no noise transmission that needs fixing regardless.

 

[Samhunag]

Welcome to the forum. Start playing some music and then pause it. Then perform different tasks on your computer. Do you hear any of that? If not, there is no noise transmission that needs fixing regardless.

When I open google chrome while listening to music, I do hear the music being interrupted for a split second.

 

[March Audio]

Hi Samhunag

The i2s input of the dam1021 is already isolated. Signals are re-clocked. You need nothing further. Nothing to be gained by using different/additional bits.

Silabs isolators

Here is a useful resource.

https://hifiduino.wordpress.com/2015/03/16/soekris-dam-1021-r-2r-dac-users-guide/

 

[Samhunag]

Hi Samhunag

The i2s input of the dam1021 is already isolated. You need nothing further. Nothing to be gained by using different/additional bits.

Silabs isolators

View attachment 9992

Here is a useful resource.

https://hifiduino.wordpress.com/2015/03/16/soekris-dam-1021-r-2r-dac-users-guide/

Hi BE718

Thank you for the input!

Looks like I save A LOT of money LOL.

 

[amirm]

When I open google chrome while listening to music, I do hear the music being interrupted for a split second.

That is due to running out of resources on your computer for that moment. the computer falls behind serving data to the DAC causing that pause. Do you have a hard disk or SSD? And how much memory?

 

[Samhunag]

That is due to running out of resources on your computer for that moment. the computer falls behind serving data to the DAC causing that pause. Do you have a hard disk or SSD? And how much memory?

I have one SSD for OS, and HDD for data. Memory size is 8GB.

 

[amirm]

That should be plenty. What I think is wrong then is too little (memory) buffering in the USB to I^2S interface. Complain to Amanero people and see what they say.