To get ready, he made a breakout board for 32-channel analog multiplexer device he wants to use. He put the project out on Hackaday.io and also has a video tutorial you can see below. There are ...

check out [winslomb]’s audio multiplexer with integrated amplifier. The device can take any one of four audio inputs, pass the signal through an amplifier, and send it to any one of four outputs.

The new version significantly extends compatibility with a wide range of remote I/O modules from leading manufacturers.

As the new concept phones move to three displays, even the newer processors with 2x MIPI ports will benefit from an analog switch multiplexer device. Therefore, understanding the use of analog ...