Apologies for the late response to this. I have only just noticed your post.
The PSR-E403 does not have an audio over USB interface. That USB port is for data only. So you cannot use this keyboard as an audio interface.
If you want to get audio into GarageBand you will need to take a lead from the phones/output on the back into your mac. I have only used the iMac and my AMD based Hackintosh but I believe the MacBook does have an audio input port.
The PSR-E403 does not have an audio over USB interface. That USB port is for data only. So you cannot use this keyboard as an audio interface.
If you want to get audio into GarageBand you will need to take a lead from the phones/output on the back into your mac. I have only used the iMac and my AMD based Hackintosh but I believe the MacBook does have an audio input port.
Statistics: Posted by Saul — Sun Apr 07, 2024 2:16 pm