• 12-13-2010, 04:13 PM
    etl
    can i convert stereo rca to Cal Audio DAC?
    Hi, I have a cd transport that has passed on and probably won't replace it as i've digitized all my music in lossless and it's easier to access. However it leaves me with a perfectly good Cal Audio Alpha DAC that created beautiful sound. Is there a sane way for me to convert stereo rca input into any of the DAC's: Coax 75; Balanced 110; Optic; and At&t digital inputs?

    I'd love to feed my Mac or my iphone to it if possible. Google hasn't helped. I'd love some learned feedback on this. Thanks in advance.
  • 12-13-2010, 08:24 PM
    harley .guy07
    there are converters that will take a usb output to a coax digital output that would work with your dac. Several companies make them and I have heard that they work well for your type of setup. To bad that your dac does not have usb input because then it would be very easy but there are converters out there that will work fine. Blue Circle makes a unit that will take a usb signal and convert it to coax for a dac. There are others as well but they do not come to mind right now but if they come to mind I will post.
  • 12-13-2010, 09:01 PM
    etl
    harley .guy07,

    thanks for the feedback. i'll keep that as a plan B.

    primarily, i'd like to be able to convert a L/R stereo rca cable into those DAC feeds. because, i can get to L/R rca from Mini output [airport wireless and iphone] and wireless to the audio system isn't stable enough for me to rely on it for enjoyable playback. Hard wiring usb would be over 50 feet, which i don't think is advisable?.
  • 12-13-2010, 09:10 PM
    02audionoob
    It seems like a Creative SoundBlaster USB or E-Mu 0404 would convert USB to TOSLink and SPDIF.

    http://us.store.creative.com/0404-US...B000IXNE3E.htm

    http://us.store.creative.com/Sound-B...B0044DEDCA.htm
  • 12-14-2010, 06:47 PM
    markw
    Think about what you're asking.
    Quote:

    Originally Posted by etl
    ...i'd like to be able to convert a L/R stereo rca cable into those DAC feeds. because, i can get to L/R rca from Mini output [airport wireless and iphone] and wireless to the audio system isn't stable enough for me to rely on it for enjoyable playback.

    That "L/R stereo RCA cable" is an analog signalthat already has beed converted, via another DAC (Digital to (Analog (Converter).

    To do what you want, you would have to RE-convert it into the digital domain via an Analog to Digital Converter. And then you could use your other DAC to RE-RE-convert it into analog. Is that what you really want?

    To make any sense of your scheme you would need to send a digital signal directly from the source to your beloved DAC, ergo the USB or digital coax suggestions.
  • 12-15-2010, 12:39 PM
    etl
    Quote:

    Originally Posted by markw
    To do what you want, you would have to RE-convert it into the digital domain via an Analog to Digital Converter. And then you could use your other DAC to RE-RE-convert it into analog. Is that what you really want?

    I guess that's the crux of the problem.

    the aforementioned apple airport has a usb out, but it's not very reliable in my home. Running usb 2.0 from the Mac would require a long lead of wire.

    the Soundblaster link above seems to act like a quick pre-amp as a way to convert the signal into a Digital out?

    Can i get a digital signal out from my iphone? And is there a way to convert usb to any of: Coax 75; Balanced 110; Optic; and At&t digital inputs, with a simple cable that isn't some sort of pre-amp type of box?
  • 12-15-2010, 01:55 PM
    markw
    Gonna take more than a simple cable...
    Quote:

    Originally Posted by etl
    And is there a way to convert usb to any of: Coax 75; Balanced 110; Optic; and At&t digital inputs, with a simple cable that isn't some sort of pre-amp type of box?

    As was previously stated:

    Quote:

    Originally Posted by harley .guy07
    Blue Circle makes a unit that will take a usb signal and convert it to coax for a dac. There are others as well but they do not come to mind right now but if they come to mind I will post.

  • 12-15-2010, 06:51 PM
    02audionoob
    Quote:

    Originally Posted by etl
    I guess that's the crux of the problem.

    the aforementioned apple airport has a usb out, but it's not very reliable in my home. Running usb 2.0 from the Mac would require a long lead of wire.

    the Soundblaster link above seems to act like a quick pre-amp as a way to convert the signal into a Digital out?

    Can i get a digital signal out from my iphone? And is there a way to convert usb to any of: Coax 75; Balanced 110; Optic; and At&t digital inputs, with a simple cable that isn't some sort of pre-amp type of box?

    The SoundBlaster is more of a sound card than a preamp. It converts digital to analog and it converts analog to digital.
  • 12-15-2010, 09:57 PM
    etl
    Presumably, the Blue Circle Thingee and/or USB Tunnel is what i'm looking for there. It's not clear to me why the Tunnel is almost twice the price but both units look like they point me in the right direction.

    Thanks for the help and quick feedback!
  • 12-18-2010, 10:07 PM
    Happy Camper
    I'm using the M2Tech HiFace with a Sigma II with very good results.
  • 12-20-2010, 03:34 PM
    atomicAdam
    It would seem this is what you are looking for -

    I've got one here - waiting for the right wall socket adapter to test it out.

    http://reviews.audioreview.com/blog/...dif-converter/

    I can let you know what I think...