Press a key on the Radium 49. If the interface flashes its indicator lights, your Mac is successfully receiving the MIDI data. Open your DAW (GarageBand, Logic Pro, Ableton Live) and begin playing. Method 2: Legacy Drivers for Older macOS Systems
M-Audio has not released updated drivers for the
If the device appears grayed out or not at all, the driver-based methods (1 or 2) are required. Frequently Asked Questions (FAQ) m-audio radium 49 driver mac
If you have an older Mac dedicated to music production, you can use the final official driver. This is not recommended for your primary internet-connected machine.
Open the window and check if the device appears. Press a key on the Radium 49
Search for "M-Audio Midisport modern macOS" to find GitHub community projects that create wrapper drivers for these older devices.
If your DAW isn't recognizing the knobs, you may need to reprogram them to send standard MIDI CC (Control Change) messages. Method 2: Legacy Drivers for Older macOS Systems
Connect the Radium 49’s "MIDI Out" port to your Mac via the interface. This bypasses the need for the Radium’s specific USB drivers entirely. Powered USB Hub:
However, if you have dusted off an old Radium 49 or bought one second-hand and plugged it into a modern Mac, you have likely encountered the "M-Audio Radium 49 Driver Mac" headache. You plug it in, the lights turn on, but your Mac refuses to acknowledge its existence, or the keys work while the faders and knobs do nothing.