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Small economical DAC with Optical input

post #1 of 6
Thread Starter 

I'm looking for a DAC with an optical in that will accept the signal from my Zune AV dock. I tried the Fiio D03K and it wouldn't recognize the signal. Looking to spend less than $50 shipped.

 

This will be sending signal to a cheap topping amp driving some old Polk monitors I had lying around.

post #2 of 6
Quote:
Originally Posted by ohsigmachi View Post
 

I'm looking for a DAC with an optical in that will accept the signal from my Zune AV dock. I tried the Fiio D03K and it wouldn't recognize the signal. Looking to spend less than $50 shipped.

 

This will be sending signal to a cheap topping amp driving some old Polk monitors I had lying around.

 

Do a search on EBay for a low cost optical input DAC.

post #3 of 6
Quote:
Originally Posted by ohsigmachi View Post

I'm looking for a DAC with an optical in that will accept the signal from my Zune AV dock. I tried the Fiio D03K and it wouldn't recognize the signal. Looking to spend less than $50 shipped.

That's very weird. Did you rule out configuration issues and perhaps a bad optical cable? Did you see if the Zune has a configuration option for choosing between bitstream, PCM, or even 5.1 audio vs stereo? The reason I ask all of this is that other optical DACs could have the same problem if you haven't ruled out all the possibilities that are not the DACs fault.
post #4 of 6
Thread Starter 
Quote:
Originally Posted by cel4145 View Post


That's very weird. Did you rule out configuration issues and perhaps a bad optical cable? Did you see if the Zune has a configuration option for choosing between bitstream, PCM, or even 5.1 audio vs stereo? The reason I ask all of this is that other optical DACs could have the same problem if you haven't ruled out all the possibilities that are not the DACs fault.

In a word, yes. I swapped out the toslink cable, I took out the D03K and swapped in a panasonic receiver with optical in and internal DAC (all else remaining the same) and got sound, I removed the DAC/optical setup and ran direct line out to the Topping amp and got sound. So I'm pretty sure it's either a bad DAC or the signal compatibility between the D03K and the Zune.

 

The Zune's sound menus are very basic, it really doesn't give you any options as far as how the optical output is formatted. I am going to have to assume that is is some manner of Dolby signal that the Fiio can't handle.

 

I'm thinking that either an Orei D34X or or maybe a Fiio D07 may be my next step.

 

But I'm open to all suggestions.

post #5 of 6
Quote:
Originally Posted by ohsigmachi View Post

So I'm pretty sure it's either a bad DAC or the signal compatibility between the D03K and the Zune.

Signal compatibility would only normally be a problem in such a way that it might be a problem with other stereo DACs as well. Did your receiver let you know what kind of signal it was getting--2 channel vs 5.1 channel? Bitstream vs. PCM? My receiver does give me enough info to figure that out, which is why I asked.

I'm pretty certain all 2 channel DACs will need PCM with 2 channel stereo digital signal. But the Zune might be able to send a compressed 5.1 audio signal using Dolby Digital, which the DAC is not going to be able to decode. For instance, with my Xonar DX sound card, I have to choose that it's 2 channel and PCM to use a stereo DAC.
post #6 of 6
Thread Starter 

Just as an update, I never got the D03K to work with my Zune AV dock, even after doing a hard reset on the dock 's firmware no sound. So, I sent the D03k back and got a D07. It works flawlessly, and sounds very good, much better than the line out.

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