Splitting Signal to Multiple DAC’s


Hello All-

I would like to find the best method of passing the coaxial signal from my music server into a device (preferably passive) that will allow me to split the outgoing signal to at least three separate outputs. The goal is to distribute one coaxial source to three different DAC’s so I can use my preamp inputs to select which is being heard.

I’ve read the archived posts and have seen similar questions asked in the past but have yet to find a recommended method of doing so. I know of active devices that perform this function but they seem to be built supporting AES3 standards as opposed to SPDIF.

In conversations previously had some have mentioned concerns about jitter, added distortion and loss. Any ideas would be appreciated.

designsfx

Showing 6 responses by designsfx

@spatialking-

Hello Robert- thank you for the response. When thinking about this early on I thought about giving this device a try. This is pricey but not outrageous when considered to other active splitters out there. 
FYI- just to clarify I would be using 75 Ohm BNC connectors from Naim Uniti Core to various coax inputs on the DAC’s. No Toslink.

If you don’t mind I’d be interested in your opinion on this unit as it pertains to your explanation above.

https://www.sonifex.co.uk/cmaesb3/cm-aesb3.shtml

Thanks!

Very interesting reading from @spatialking- getting more into it seems as though clock issues with the SPDIF data stream with increased jitter/distortion potential makes this not so simple (at least from my perspective). Sounds like the answer may be along the lines of this-

https://www.mutec-net.com/product_mc-3-plus-usb.php#data

@bruce_philly 

Hello-

I just came across a thread you started 5 years ago where you mention using a Mutec 1.2 as a throughput device to stream your music playback to multiple DAC’s and CD player. I’d like to ask if you’re still using this device and if so how well has it been working for you? Have you changed equipment/configuration since starting the thread? 
As you can see from the subject of this thread I’m trying to find the best method of distributing a single source to three separate DAC’s. Any insight you can provide would be appreciated.

Best-

Designsfx

@spatialking -

Thank you again for your advice on this- it’s really been helpful. Quick background with Sonifex- I made an inquiry on their devices earlier this year, they make both active and passive. I didn’t care for their active SPDIF distribution device as all connections are RCA and their sales dept couldn’t comment on the the approach to buffering.
The transformer based passive unit seemed like the way to go but I held off purchasing because I didn’t understand if the signal loss would be too high due to the fact that it was designed for AES 110 ohm applications. I like the idea of the passive though. I asked if Sonifex’s engineers could perform a quick test with SPDIF over BNC but they declined as “it wasn’t worth their time for a single unit sale”.

At this point I like the thought of using the Mutec 3+ USB as it seems to be of higher quality, offers a selection of different outputs and also offers an excellent word clock (at least from what I’ve read). I’m not in a hurry with this so I’ll do a little more research before throwing money at it. Again- thank you for the time and the great advice.

Best-

Todd

@djones51-

Hello and thanks for the shortcuts. I spoke with the folks at Henry sometime ago as this was one of the first distributors I had seen. These are actually made a few minutes from where I live.

The question with this one comes back to the signal voltage between SPDIF and AES as SPDIF is lower coming into the device. Not sure of what actually ends up leaving and/or if it’s too low or higher than what the DAC’s receiver is wanting. 

Have you tried this product for this application in the past?