How do I set an RS151 to Upsample PCM to DSD Analogue Out

Function
#1

How do I set the RS151 to upsample PCM to DSD and output the sound over the analogie outputs?

Thanks,

#2

As far as I understand, if you use the device’s built-in chip, you won’t be able to upconvert PCM to DSD. This can be done through ROON, but it will put some load on your processor, and you’ll also have to deal with signal attenuation to avoid clipping — although you’re unlikely to actually hear a difference. I spent a long time experimenting with this and in the end just left the signal untouched by default. After going through many forums, I realized that most users end up doing exactly the same.

1 Like
#3

DAC chip, being a proper delta-sigma kind, does that by design. Unless you want to apply some other effects (like room correction) there’s no point in upsampling externally, and especially in converting PCM to DSD.

#4

@Woody

Thank you for your inquiry about setting the RS151 to upsample PCM to DSD and output it via the analogue outputs.

  • The RS151 supports native DSD playback through its analogue outputs, up to DSD512 (as specified in the manual).
  • However, the RS151 itself does not include a built-in PCM → DSD upsampling function in its firmware/OS. In other words, there is no internal setting that automatically converts PCM to DSD before analogue output.
Rs151 OCM to DSD