User level: Level 1 (4 points)I have a Rega Analog to Digital USB phono preamp. The USB output is not recognized by my Mac running 158.1. It is recognized by an older Mac running 10.13.6
Posted on Oct 11, 2026 4:33 PM
User level: Level 7 (27,833 points)Oct 11, 2026 5:41 PM in response to David1080
Have you selected the Rega box as your sound input in Audio MIDI Settings?
What app are you using to (presumably) record from your Rega box? There is usually also a setting in the recording app to select the input.
If you are using a USB hub with the Rega box, connect the Rega directly to your iMac.
If those do not solve the problem, please give more details about your setup.
Originally posted at discussions.apple.com/thread/256374400