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ADAT Optical Output in 96K?

Discussion in 'Recording' started by Johnjm22, Jul 24, 2004.

  1. Johnjm22

    Johnjm22 Guest

    As far as I know the information being passed through an ADAT Optical Digital out can only go as high as 48K. But I was researching the Focusrite Octopre and it states that there is a new ADAT spec that now makes it possible to use ADAT to transfer 96k digital information. Has any one heard about this? Or does any one know where I can get info on this new spec?

    The reason I ask is because I want to be able to take more inputs on my Digi 002, but I want 24/96 not 24/48.

    Straight from the FAQ section on the Focusrite ebsite:

    Q: How can the OctoPre operate with the ADAT lightpipe format at 96kHz? I thought the maximum sample rate for this format was 48kHz?
    A: Not any more. The OctoPre supports the new 96kHz ADAT specification, using two discrete optical ports.
  2. AudioGaff

    AudioGaff Well-Known Member

    96kHz capable ADAT has exisited for a few years already in the form of S/MUX where it takes two ADAT optical ports for 8-ch of 24/96K. Some units/devices support it. Digidesign does not as of yet and the 002 will never support it.
  3. Aziel

    Aziel Guest

    I love AudioGaff`s answers... 8)
  4. Johnjm22

    Johnjm22 Guest

    Thats very dissapointing. I wanted to use like an Octopre, or a Digi max for my digital conversion, since their converters and pre's are probably better. But I guess its not worth it since I can't use 96k.

    What do you guys think? Is it better to use like an octopre at 48K, than the Digi 002 at 96K?
  5. AudioGaff

    AudioGaff Well-Known Member

    It is not really a question of which is better if you want the extra inputs to use at the same time, your stuck at the max of 48K. Nothing wrong with that.
  6. Johnjm22

    Johnjm22 Guest

    But I thought the converters in the Octopre would be alot better than the ones in the 002. Same thing for the pre amps.

    Are you saying 96K isn't really any better than 48K?

    I used to intern at Ocean studios and the engineer there told me that he couldn't even really hear the difference between 48k and 96K. But just the fact that I have to go down on the sample rate bothers me alot.
  7. AudioGaff

    AudioGaff Well-Known Member

    It very much depends more on the overall variables in your signal path, gear that is used, monitioring chain and your ability to hear any possible improvement than the blank statement that 96k is always better than 48k. Great sounding recordings can be done at 44.1k, 48k or even at 16-bit.

    I would not expect any budget 8-channel mic pre with or without converters to have that big of a difference over what is in the 002.
  8. Johnjm22

    Johnjm22 Guest

    What about the SPIDIF RCA port. Can that be used for 24/96?

    I know its only two channels, but I would be happy if I could take 10 channels at a time all in 24/96.
  9. soundfreely

    soundfreely Guest

    I don't know about the 002's ability, but I do send 24/96 over one SPDIF all the time without any issues.


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