You can use a DAC, according to the docs, there are loads supported as the other commenter suggests. I've got one of these https://www.hifiberry.com/dacs/ https

You can use a DAC, according to the docs, there are loads supported as the other commenter suggests. I've got one of these https://www.hifiberry.com/dacs/ https://www.hifiberry.com/dacs/