I'm working on a project bass guitar with individual outputs per string using Nu pickups from Cycfi Research: https://www.cycfi.com/
The common sense approach is to simply take their circular connector and use this to interface, but I'd like to know how realistically could I use a multichannel ADC/MCU to convert the 4 (or more with scalability accounting for 5 strings or two pickups) outputs serially to an RJ45 in real-time? The goal would be to preserve each individual output to process digitally in a box or use a DAC to split the channels back out to process with analog pedals (for example).
This is a question of "could" not "should," and it comes from a place of learning, tinkering, desire to use a more commonly available cable for lower cost (the circular is a good deal for its quality, but it's $84 and not common), and the ability to send power all in one cable. Development time, headache, and cost of electronics inside or outside the guitar are not a factor, this is a hypothetical since I just don't have experience working with multichannel ADCs or ethernet and I'd like to use this as an alternative project to learn from.
I don't mind if this is wrong, I'd just like to understand if this is a rabbit hole or the elusive unobtainium. Thanks in advance!