Symphony I/O Mk 1
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      SPDIF or ADAT/SMUX Optical does not work with Symphony I/O

      Symptom: Optical I/O does not work with Symphony I/O

      Solution: There are a number of logical and easily correctable causes for this.  Please examine the following steps - 

      • Open Maestro and go to the "Device Settings" tab and confirm that the "Optical Format" drop-down menu is set to the correct format.
      • If you do not see a "Optical Format" drop down you could be on AES mode on some 8x8 cards.  See this button on the back of your card.
        Symphony_8x8_AES_ADAT_Button.png
      • Make sure that both SymphonyI/O and any digital device are set to the same sample-rate and that one is clocked to the other.
      • Toggle sample-rate back & forth
      • Reload audio driver in software (for example- in Logic, go to audio preferences, make a change and click "Apply Changes").
      • wiggle optical cables and try different optical cables