OL DAC: The People’s Filter

Understanding some customers’ want for customization, we placed an Easter egg in OL DAC  for you to filter the sound however you see fit!


If you wish to experiment with the sound signature of your OL DAC, we left pads for a 3-position DIP switch on the PCBs, Omron Part# A6SN-3104. Ask for it when ordering and we’ll be glad to pre-install.

Edit: AKM provides a summary of the available filters:

AK4490EQ Interpolation Filters [Source: AKM]
AK4490EQ Interpolation Filters [Source: AKM]

7 thoughts to “OL DAC: The People’s Filter”

    1. Hi Jay – You will need to solder the suggested DIP switches in place. Filters are configured using the 3 DIP switches. Please see above picture.

    1. Tom – Good question. The following S1 legend corresponds to the AK4490 datasheet:

      1 -> SLOW (off = Low)
      2 -> SD (off = High)
      3 -> SSLOW (off = Low)

Leave a Reply

Your email address will not be published. Required fields are marked *