This is what my son had to say about it. Ironbut’s input above is what I thought as well and is a good place to start: That won’t really work per say, thunderbolt and spdif are two complete different formats and I don’t see anything for a connector to connect the two. Depending on what he’s working on and how “professional” he needs it to sound, his best bet would be to get an dual RCA to 8th inch adapter or dual quarter inch to 1/8th inch Y-Splitter (typically forbidden in any professional grade sound) run his Audio port on his MacBook as an input as opposed to an output. Other than that if he can find a small interface that has ADAT or SPDIF capabilities that would be his best bet in recording music with his presonus in the future. There doesn’t seem to be any type of digital output on it other than Toslink/ADAT or SPDIF. I’ll take a look and see what I can find for interfaces. Sent from my iPhone using Tapatalk