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Multiple DACs
#1
I haven't updated to moode 7 yet, it's on my list of things to do, but I was interested in a possibility of the new CamillaDSP component included in moode 7.

Currently I have a fairly standard stereo DAC fed into a hardware splitter board that produces a 2.1 output to pass on to a stereo amplifier and a subwoofer amplifier. I plan to upgrade the DAC as I'm currently using a Pi2Design unit which has some issues and isn't compatible with Pi 4. So it occurred to me that there's maybe an opportunity to use CamillaDSP to do the 2.1 splitting in software and pass the result to 3 DAC channels.
I'm not aware of any 3+ channel DAC HATs, but is it possible to interface a single Raspberry pi to multiple stereo DAC HATs to obtain the required number of output channels? I was considering using Ian Canada's ES9038Q2M units, but I'm more interested in whether the idea is possible at all than in a particular hardware configuration at the moment.
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#2
You might want to look at Allo Piano 2.1 DAC.
https://allo.com/sparky/piano-dac-2-1.html

Install the DSP firmware and configure it for 2.1 output using moOde's Chip Config screen for this DAC.
https://allo.com/sparky/piano-dac-2-1.html#downloads

It's been couple of years since I tested this DAC but it should still work.
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#3
(04-04-2021, 03:49 PM)Tim Curtis Wrote: You might want to look at Allo Piano 2.1 DAC.
https://allo.com/sparky/piano-dac-2-1.html

Install the DSP firmware and configure it for 2.1 output using moOde's Chip Config screen for this DAC.
https://allo.com/sparky/piano-dac-2-1.html#downloads

It's been couple of years since I tested this DAC but it should still work.

Thanks Tim, yes I remember I had looked at the Allo Piano 2.1 a while back but part of the appeal of making the changes would be to use DAC boards with balanced outputs, as my amplifiers have balanced inputs. At the moment the board that does the splitting also balances the outputs, so if I were to do away with this I would either need to make alternative boards that just balanced the Piano 2.1 outputs, or preferably use DACs that did that already - I was considering something like Ian Canada's boards because the I/V stage offers balanced outputs, but I'm not particularly tied to that hardware if there's something that does what I need -  but I'm not sure whether it's possible (either physically or from an interfacing point of view) to connect several i2s DAC boards to a RPi and just expect them to work as multiple audio devices.
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