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I've two different devices, a first one with s/pdif (optical) output and a second one with simple mini-jack 3.5 output. I want to 'mix' sound from both of them and make output for simple headphones. The actual problem is that I'm not sure how to get it done. I will try to describe couple solutions imho should work, but due to my poor experience I'm not sure what to choose. Help me please. So:

  1. Behringer MX400 + s/pdif to analog converter + cable (3.5 - 6.35). I don't actually like the idea with this converter, and I prefer all-in-one solution.

  2. External audio card, like NI Komplete 6 (this card has s/pdif input (but digital)). I'm not sure this will work without PC. And this card require USB power, maybe I can use USB 'travel adapter' instead?

  3. DJ mixer. Sounds good but models with s/pdif inputs are extremely expensive and hard to find.

  4. AV-receiver. I'm not sure will it work the way I want, but it has s/pdif inputs as well as analog LR inputs. It also has headphone output. But will it 'mix' sound from 2 inputs or I just have to choose one?

  5. Or headphone amplifier like FiiO E17 with s/pdif and 3.5 input. But I'm not even sure will it output from 2 inputs simultaneously.

What solution can you suggest to me please.

Thank you for any advice.

closed as off-topic by Ƭᴇcʜιᴇ007, bwDraco, DavidPostill, Nifle, mdpc Jan 7 '15 at 2:29

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    U want both play same sound at the same time? – Sdghasemi Jan 5 '15 at 20:05
  • Yes, exactly... – Mike Jan 5 '15 at 20:09
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    #5 won't work as the FiiO E17 doesn't have a mixer built in . . . you have to select the input (e.g. USB, optical, coax, aux). #1 (s/pdif to analog, and then into a mixer as well as a second analog source) is probably your best bet if you can't use a PC for processing. – ernie Jan 5 '15 at 22:33
  • @ernie Ah I see... Thank you, seems like #1 is the really one and only affordable solution. – Mike Jan 5 '15 at 22:54
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Since you're working with no PC, the setup is a bit problematic, and won't exactly be the cheapest either. Sound cards and stuff, even external ones, require a PC to work. You have a digital and an analog source, which means that you likely won't be able to mix them in one box (unless you get an expensive digital mixer with SPDIF input).

Personally, I would recommend a basic analog mixer (get them used for cheap), which would probably have a headphone out. You'll also need a DAC to convert the SPDIF to analog. Hook up your two sources to the mixer and you're good to go.

If you want audiophile quality, I would recommend a digital mixer or similar, or a higher-end analog setup with a better mixer and D/A. Once again, this is a rare situation and consumer equipment generally isnt up to this task.

  • Thank you, you make it clear for me. I think I will follow your advice. :) – Mike Jan 5 '15 at 22:53
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Actually i think the best option in the ones you mentioned is the last one. cause it'll definitely works and doesn't decrease sound quality.

but there is a free windows-base alternative which i suggest you to try first.

Right Click on volume icon on left bottom corner and choose Playback devices. then find Stereo Mix in the Recording tab (if not find, Right click on the white area and make all devices Show) and set it as Default Device.

Then open its Properties and check Listen to this device on Listen tab.

Then Choose your secondary Playback device in Playback through this device combo box. And press OK.

Then Activate your first playback device on Playback tab. and press OK.

now your system configured to listen to the 1st device like a microphone and play it back on the 2nd.

try that. hope it works!

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    Thank you for your advice, but the actual problem is that I need it to work without PC at all. =\ – Mike Jan 5 '15 at 20:41
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    :) So in this case i think the last option would be the best choice. – Sdghasemi Jan 5 '15 at 20:45

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