Neil C wrote: 
> I installed the EDO today on my Touch. My connection is
> Server->Router->Touch->W4S DAC2. Connections are Ethernet, then coax and
> USB from Touch to DAC. I am using a PC with Windows XP.
> 
> No problem playing 24/192 files through coax, but USB does not play. I
> called W4S and was told the server must connect directly to the DAC. The
> W4S DAC comes with a driver disk and, although it seems to install from
> the disk, the DAC is not recognized and the drivers do not appear
> anywhere on the PC (where did they go?). When I plug the USB in, the W4S
> seems to recognize the Touch, as the display shows a sample rate of 48
> kHz, which is blank when not connected.
> 
> Does the uDAC come with driver disk? Possibly a difference between DAC2
> and other W4S DAC's? How did you get the EDO to play in adaptive mode,
> as Triode says it won't? And what would be the point if you cannot use
> asynch with USB when coax works perfectly fine? Thanks.
> 
> And a big THANK YOU to Triode for all the work and attention!
> 
> --Neil
Neil,

I think I should start by explaining my understanding of drivers and
dacs. All dacs need a driver so it can connect and work with the
computer to which it is physically attached in order to play music.
Windows, Mac and Linux all have standard built in drivers. If the
standard driver does not work with a particular dac then a driver can be
written for that particular operating system / dac combination. Most
dacs on the market now work with the current Mac drivers. Very few dacs
work with current Windows drivers but many dac makers provide a driver
that will work. Many dacs work with the standard Linux drivers but I
have not seen any dac maker provide a Linux driver when the dac needs
one. Since the Squeezebox Touch is a Linux computer with standard
drivers a dac will only play music with the USB input if it can work
with the standard Linux drivers. Adding drivers to the server feeding
the SBT will not help.

Since your DAC2 plays music from the server with the coax input we can
limit our driver discussion to the standard Linux drivers on the SBT.
John Swenson said he thought Wyred4Sound uses the M2Tech OEM board which
cannot use the standard Linux drivers and so their dacs will not work
with the SBT. I asked Wyred4Sound if they use the M2Tech OEM board. The
response was that the µDAC, mINT and DAC1 do not use the M2Tech OEM
board. The answer did not list the DAC2. The DAC2 may very well use the
M2Tech OEM board in which case it should not work in either async or
adaptive mode on the USB input. Triode then suggested I as ask
Wyred4Sound if the µDAC would work with standard drivers. The
Wyred4Sound response was "The interface does work with Linux driverless
in adaptive mode. It will not work with Linux in async mode."

The µDAC does come with Windows driver which I have used to play music
with J. River and MediaMonkey players. The drivers work fine but that
has nothing to do with the SBT.

Here is how I use the USB input on the µDAC: 1. use EDO, 2. connect the
µDAC directly to the SBT (no USB hub), and 3. use the 9v external power
supply. It automatically uses adaptive mode and plays quite well. As the
µDAC has a 24/96 USB input I should have to use a USB hub with the EDO
to get async. With a hub the SBT cannot see the µDAC. I suspect this
means the the standard Linux driver in the SBT works in adaptive mode
with the µDAC but does not work in async mode with the µDAC. I keep
trying all of Triode's updates in hopes the async problem is really
something else. If the DAC2 has the M2Tech OEM board you should not
expect it to work with the SBT. I would do a test though by connecting
the dac to the USB connector on the SBT and installing the EDO. If the
SBT does not recognize the DAC2 you probably will not be able to get it
to work.

Not working with USB is not really a problem for you. The EDO gives you
24/192 playback on the DAC2 with the coax input. That should be great. I
am using the EDO with coax on the µDAC and am quite happy with what I
hear.

The reason I am interested in the async USB input is that if it worked I
just might prefer it to the coax input. This is not likely with the µDAC
and its ESS Sabre chip but the tinkerer in me would like to know. Once
Triode stops changing the EDO I expect I will just use coax input and
forget about using the USB input on the µDAC. I bought the µDAC to use
with MOG on the SBT and the total package is a delight.

Fred


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