Hi,

I have a MUX, Opus, Ballsie Lite, LCDPS and LCBPS.

At the moment I have:
· Separate grounds from the PSU's to each of the modules
· Ground connected between the MUX and Opus I2S connectors
· Ground connected between the Opus output and Ballsie input

Are all these grounds electrically connected?

Would it be preferable to join the grounds of the LCDPS and LCBPS and omit the ground connection between the MUX, Opus and Ballsie?

Cheers,
Sim