I have a design using 3 adau1761. I am using the pos/neg line outputs to an opamp that converts it to single sided and removes the bias (1/2 3,3v). I am considering changing that scheme to use the POS outputs from the 3 chips to an op-amp mixer stage through 10k resitors, and connecting the CM voltage to the non-inverting input to remove the bias. This would eliminate a few opamp stages. Is there any advantage to usig the pos/neg, compared to using the POS referenced with CM?