USB to I2S 384Khz - DSD Converter

[Jackal29a]

BTW, how did you connect the wires from the Amanero to the Opus?

Was it like this?:
Pin3 (DATA/DSD1) -> R (OSRD/DSDR)
Pin4 (CLK/DSDCLK) -> C (BCKIN)
Pin5 (FSCLK/DSD2) -> L (LRCL/DSDL)
Any GND pin -> G (GND)

[HAL2010]

Jackal29a,
Yes, my wiring is:
Pin3 -> R
Pin4 -> C
Pin5 -> L
Pin8 -> G

Installed a 4 pin header on the Opus DAC to make the connections easy for trials.

[Jackal29a]

Have you tried using the suggested Foobar setup yet?

[HAL2010]

I have made the changes to Foobar2000.

I have been putting the entire DAC in a chassis. Still in process.

Will try this once the install is checked out to make sure I have all the new PS connections correct. Do not want to blow the DAC chip by wiring the PS incorrectly.

[HAL2010]

Put a brand new TPA Opus DAC board into a chassis with the Amanero USB to I2S Bus board. Running the output stage and DAC board off of separate supplies to minimize noise. There is a ground tying the two sides together at the output.

I setup Foobar2000 with the SACD plug-in to output 176.4KHz rate with 24bits. Used both the KS and WASAPI (event) output types for driving the DSD input. No sound from either format.

Foobar2000 is setup as a memory player with 2GB of main memory dedicated to the file storage.

I did setup the ASIO output format. Tried that and gave a normal error when I tried using it as the Amanero board does not support an ASIO driver at this time.

I eliminated the DSDIFF decoder plug-in to make sure it was not turning the DSD into real PCM for output.

Any other suggestions welcome.

[HAL2010]

Made some progress. I switched to HQPlayer and after adjusting the setting was able to get the board to change the DSD detect line to ON. Still no music.

Was never able to get Foobar2000 to change the DSD detect line using the suggested settings.

Have one more setting to try in HQPlayer to see if it correctly outputs the DSD signal along with the DoP marker.

[Jackal29a]

HAL, the DSDDIFF plugin only outputs PCM, is obsolete and conflicts with foo_input_SACD. In order for the SACD one to work properly the former needs to be completely removed from Foobar.

Once the above mentioned plugin is removed, go to the SACD config page and make sure the "ASIO Driver Mode" is set to DSD. Forget the ASIO part of the name, it works for WASAPI/KS too. Configure the foo_DSD_ASIO device for "dCS Marker 0x05/0xFA" but don't use it as the output device, use KS or WASAPI instead just as you did.

In the Foobar status bar (lower left) check the utput sampling rate, if it says 176400 you are not otputting DSD but PCM, only if it reads 2822400 you will sending DSD to the Amanero board, see the red marked area in this pic:



If you get the same as in the pic then it is something to do with the switch config of the Opus and you'll have to ask the TPA people or try to guess the correct config from the WM8741 datasheet.

I don't have a DSD capable DAC ATM but the above Foobar setup was tried on another memeber's Amanero+B-III combo and worked perfectly.

[awpagan]

Originally Posted by HAL2010

Put a brand new TPA Opus DAC board into a chassis with the Amanero USB to I2S Bus board. Running the output stage and DAC board off of separate supplies to minimize noise. There is a ground tying the two sides together at the output.

I setup Foobar2000 with the SACD plug-in to output 176.4KHz rate with 24bits. Used both the KS and WASAPI (event) output types for driving the DSD input. No sound from either format.

Foobar2000 is setup as a memory player with 2GB of main memory dedicated to the file storage.

I did setup the ASIO output format. Tried that and gave a normal error when I tried using it as the Amanero board does not support an ASIO driver at this time.

I eliminated the DSDIFF decoder plug-in to make sure it was not turning the DSD into real PCM for output.

Any other suggestions welcome.

I thought the WM8740/41's in the opus needs to be run in software mode to get them to use 176.4KHz rate. IIRC

[Jackal29a]

Originally Posted by awpagan

I thought the WM8740/41's in the opus needs to be run in software mode to get them to use 176.4KHz rate. IIRC

I thought what needed to be in software mode to accept 176.4KHz was the WM8804 SPDIF IC, not the WM8740/1.

[HAL2010]

Originally Posted by Jackal29a

HAL, the DSDDIFF plugin only outputs PCM, is obsolete and conflicts with foo_input_SACD. In order for the SACD one to work properly the former needs to be completely removed from Foobar.

Once the above mentioned plugin is removed, go to the SACD config page and make sure the "ASIO Driver Mode" is set to DSD. Forget the ASIO part of the name, it works for WASAPI/KS too. Configure the foo_DSD_ASIO device for "dCS Marker 0x05/0xFA" but don't use it as the output device, use KS or WASAPI instead just as you did.

In the Foobar status bar (lower left) check the utput sampling rate, if it says 176400 you are not otputting DSD but PCM, only if it reads 2822400 you will sending DSD to the Amanero board, see the red marked area in this pic:




If you get the same as in the pic then it is something to do with the switch config of the Opus and you'll have to ask the TPA people or try to guess the correct config from the WM8741 datasheet.

I don't have a DSD capable DAC ATM but the above Foobar setup was tried on another memeber's Amanero+B-III combo and worked perfectly.

That is the setup that I tried at one point with the DSDIFF component removed, and just rechecked it. I used the setup in FOOBAR2000 and monitored the DSD ON line from the Amanero board. The display looks the same as yours to indicate DSD64 playback, but the DSD flag is off. The player thinks it is outputting DSD data, but it is not. No music is heard from the system.

I then used HQPlayer with a similar setup (DSD DoP Marker mode) and it is correctly outputting DSD data to the DAC. The DSD ON line is ON and getting music.

The WM8741 in Hardware Mode plays back DSD data correctly. No need for software mode.