DAC: bundling 8 channels into 2 channels

[robertopisa]

I am planning to buy a 8-channel balanced DAC but I am using it for 2 channels. I would like not to waste the other six channels (the DAC chip is a Sabre).
What if I bundle together the 8 channels to get 2 channels?

Specifically, for each channel, let's call pin 1, 2, and 3 the ground, positive and negative of differential transmission.

I could wire the pins 1 of four channels together in parallel; same thing for their pins 2 and their pins 3. This would make the left channel.

I could repeat the same with the remaining four channels, thus making the right channel.

Clearly, I need to replicate on the source the same signal on each channel.

The current increases by a factor of 4, but the voltage stays the same. Is this a too simplistic approach?

Thanks
-R

 

[robertopisa]

Got an answer from the designer of my DAC. It lowers the impedance and the noise floor: the latter improvement is negligible if the noise floor is already very low (as is the case of my DAC).

 

[Nrik]

I Think this is the normal approach with the ESS Sabre 8-channel DAC-chip in modern audiophile equipment.

 

[robertopisa]

Better to check before messing up things