The audio industry, and probably not a stretch when I say nearly the entire audio industry, is untouched by university degree (except in a few schools), the products at the base level does not require a specialized university degree (or sometimes a degree at all), and the science at the deep end is not taught in university courses anyway.
In other words, it's self learn.
The breadth of electronics cannot be underestimated.
Also, as much as I want to encourage someone to do what he loves, be sure it puts food on your table. Where I live, there's no audio science factory hiring audio scientists. On a planet where Samsung owns half the industry and sells $50 (parallel import market price) TWS with -40dB ANC that conforms to Harman target, there is not much practical thing left to make and sell, and it becomes less of a "push the limits of science" and more of a "can I get people to buy" business instead.
Perhaps interestingly, there is a lot to learn in telecomm engineering that is also relevant in audio electronics. Like S parameters... and Laplace transform (because why stop at 1 S). Information theory too, gotta know what DSP is doing. And of course, amplifiers.
If you survive the course, you will qualify for jobs that pay way more than doing stuff in audio. After all, telecomm hardware is a way bigger market than DACs.