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Any Juli@ / Buffalo users considering an ExaU21 as a Juli@ replacement.

76.226.231.142

In Reply to: RE: cMP - the open source high-end Memory Player posted by cics on December 30, 2007 at 05:42:01

This is a device that takes usb input and outputs I2S for up to 4(maybe more) channels. Several folks on the Exa website (see below) that had Juli@ I2S out to a Buf32s or dac that takes I2S say that the sonics are way superior. There is lots of stuff about this product on DIYAudio and the ExaU21 web site. Yes it is a bit pricey but it provides galvanic isolation between pc and dac and allows one to use a digital x-over (within a vst on cplay) which Juli@ does not on its digital output.
If anybody here has done it I would like to hear some feedback. In my setup currently I kludge I2S out from Juli@ use a beefed up power supply to power Juli@ and this results in a messy hardware arrangement. The ExaU21 could be mounted on the Buf32s board and take input from the pc usb output. Very neat potentially for me. Yes it is expensive... $430Canadian.

Gstew I would think you may be interested in this.
http://exadevices.com/Home.aspx (Open in New Window)

Follow Ups:

ExaU21 as a Juli@ replacement. - play-mate 04:37:58 06/26/11 (5)
Hey theob,

Indeed a very interesting piece of gear you�ve found.
If the device really operates asynchronous ( in my understanding using USB directly on the BUS level) it could be an alternative to certain I2S setups requiring/accepting 384kHz samplingrate.
-on the other hand, every PCI or PCIe device grab�s signal processing on BUS level.

I�m not sure about the digital crossover ability you�re mentioning.
Of course you can split the frequency bands and route them to two different DACs, but then you need to clock-sync these.
With two regular DACs and a clocking device it�s gonna be an expensive solution, yet compromised one.
-and a multi-channel D/A converter interface will most unlikely accept I2S.

In my view there is no quality alternative to digital crossovers with cMP than the route I�ve followed for some time.

I�ll repost my tread on this.

kind regards

cMP2 Computer: i3-540 Core cPlay039 >FIR filter w/ convolver> Lynx Aurora 8 FireWire /192kHz throughout. 2x AcousticReality Ref. 202 & 2x AcousticReality Ref. 601�s ICEpower. Magnepan MG3.3R beechwood frames & custom stands. Miller chokes
- RE: ExaU21 as a Juli@ replacement. - theob 05:37:31 06/26/11 (4)
  I greatly appreciate what you have accomplished...my only problem is I'd have to buy a new soundcard with 6 outs to do it. I'd sure like to know more about your setup though.
  - RE: ExaU21 as a Juli@ replacement. - play-mate 06:04:57 06/26/11 (3)
    Dear theob,
    
    for anyone that plays around doing something similar, the best entry level is a RME FireFace 400.
    -it has FireWire connection; it�s external; it has a decent quality; it can be powered from an external power supply and can be found 2nd hand....
    
    In the recommended Gigabyte boards, FireWire can be slotted straight into the motherboard, as these have the "must-have" Texas Instruments EEE1394 chipset.
    
    If you�re considering an internal soundcard to begin with, make sure it doesn�t conflict with cMP optimized BIOS and PSU requirements....
    
    kind regards
    
    kind regards
    cMP2 Computer: i3-540 Core cPlay039 >FIR filter w/ convolver> Lynx Aurora 8 FireWire /192kHz throughout. 2x AcousticReality Ref. 202 & 2x AcousticReality Ref. 601�s ICEpower. Magnepan MG3.3R beechwood frames & custom stands. Miller chokes
    - RE: ExaU21 as a Juli@ replacement. - theob 08:17:32 06/26/11 (2)
      I really wanted to get away from another soundcard but you given me something to think about.
      - RE: ExaU21 as a Juli@ replacement. - play-mate 08:33:13 06/26/11 (1)
        
        In Reply to: RE: ExaU21 as a Juli@ replacement. posted by theob on June 26, 2011 at 08:17:32
        
        Hey theob,
        
        hehe...that was un-intentional ;-)
        
        When cics launched the cMP project, there were hardly any FireWire DAC options and no asynchronous USB devices either, but once cPlay is connected directly with a FireFace or an Aurora via ASIO, you�re circumventing a lot of what cMP is about : Jitter !
        With FireWire and the appropriate driver the entire clock-stability becomes business of the external device.
        
        kind regards
        cMP2 Computer: i3-540 Core cPlay039 >FIR filter w/ convolver> Lynx Aurora 8 FireWire /192kHz throughout. 2x AcousticReality Ref. 202 & 2x AcousticReality Ref. 601�s ICEpower. Magnepan MG3.3R beechwood frames & custom stands. Miller chokes
        
        RE: ExaU21 as a Juli@ replacement. - theob 08:37:18 06/26/11 (0)
        
        In Reply to: RE: ExaU21 as a Juli@ replacement. posted by play-mate on June 26, 2011 at 08:33:13
        
        Thanks Play-mate

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