Gustard U18 DDC / Musician Audio Pegasus

[0mega0]

I am using the Gustard U18 with a Musician Pegasus DAC. I am using the I2S output on the U18 and the I2S input on the Pegasus. PCM audio seems to work fine, however the left and right channels are swapped while playing DSD audio. I have tried the 4 different modes on the U18 and the 8 different modes on the Pegasus, but the L&R channels are swapped on all modes for DSD audio. Is there something else that I can try? I am using this cable. Do I need a different type of cable?

It looks like pins 1, 3, 4, 6, 7, 9 can be matched. I noticed that pins 10 & 12 on the Pegasus are MCLK- & MCLK+ respectively, where on the U18 pins 10 & 12 are MCLK+ & MCLK- respectively. Is that an issue?

I appreciate any help. Thank You,

 

[Dunring]

There was someone with the same issue at

pinout mode GUSTARD U18 SMSL200 DAC

I wanted to ask you how to configure the pinout mode of a GUSTARD U18 combined with the SMSL200 DAC. In Gustard U18 there is a physical button for pinout mode switching with these values: IIS pinout mode（IISThere are 4 IIS modes on HDMI port of U18: GUSTARD、MODE2、MODE3、MODE4 Turning instead to...

www.audiosciencereview.com

I just had one of them last week, but looks like they solved it.

 

[0mega0]

Thank you, but it appears that their solution was to swap the RCA cables, which would make PCM audio incorrect.

 

[0mega0]

I swapped the XLR out cables, then was able to find the I2S mode where everything was backwards, then PCM and DSD came of the correct channel. I also had to experiment until the phase was correct for both types.

 

[EddNog]

I swapped the XLR out cables, then was able to find the I2S mode where everything was backwards, then PCM and DSD came of the correct channel. I also had to experiment until the phase was correct for both types.

What settings did you use for the U18 and for the Pegasus? I am looking to use a U18 to feed a Draco.

-Ed

 

[0mega0]

What settings did you use for the U18 and for the Pegasus? I am looking to use a U18 to feed a Draco.

-Ed

I will check later when I am home.

 

[EddNog]

I will check later when I am home.

I ended up getting PCM to work fine over I2S between my U18 and my Draco. DSD on the other hand is not working over I2S when I get PCM working. PCM is more important to me; I can use coax S/PDIF as a fallback when listening to DSD.

-Ed