If the lack of drivers is a dealbreaker, consider these modern controllers with excellent Mac support:
Windows 10/11 has better backward compatibility for legacy MIDI drivers. If you dual-boot or have an older PC, the Radium works perfectly there.
If you need those faders and knobs, you have three options:
Even if the keyboard is plug-and-play, you must tell your music software to look for it. Here are settings for common DAWs:
Ableton Live:
Logic Pro:
GarageBand:
| User Profile | Recommended Action | |--------------|--------------------| | Need only basic keyboard playing (notes, pitch, mod) | Use native macOS driver – works fine | | Need knobs/sliders for studio use | Use DAW MIDI Learn + manual mapping | | Need full original functionality (buttons, presets, editor) | Use a legacy macOS system (10.13 High Sierra) or a Windows PC | | Running macOS 15+ (Sequoia) | No change; class-compliant only – same as Sonoma |
Final Verdict: The M-Audio Radium 49 is not officially supported on modern macOS, but remains usable as a basic MIDI controller. For professional or critical use requiring all 49 keys + full controller features, consider replacing it with a modern, class-compliant controller (e.g., M-Audio Oxygen Pro, Arturia KeyLab, Novation Launchkey).
Report compiled based on M-Audio legacy driver archives, inMusic support knowledge base, macOS system logs, and community testing on MacForums, Gearspace, and GitHub. No future driver updates are expected from the manufacturer.
The M-Audio Radium 49 is a legacy MIDI controller that presents significant compatibility challenges on modern Mac systems because it is not class-compliant and relies on drivers that are no longer officially supported for recent macOS versions. Compatibility Status
Modern macOS (Catalina 10.15 to Sequoia 15): There are no official drivers for these versions. M-Audio considers the Radium 49 an "end-of-life" product. m-audio radium 49 driver mac
Legacy macOS (up to Yosemite 10.10): The last known stable drivers were released for OS X 10.8.5 Mountain Lion, though some users report success using them on 10.9 Mavericks and 10.10 Yosemite.
Classic Mac OS (9.0 - 9.2.2): Drivers are available for vintage systems using the MIDISPORT 3.0.8 installer. Working Around Driver Issues
If you are on a modern Mac and the device is not recognized, the most reliable "driverless" fix is to bypass the Radium’s internal USB interface entirely.
Use a MIDI-to-USB Cable: Connect a dedicated MIDI interface cable from the MIDI OUT port on the back of the Radium 49 to a USB port on your Mac. Since these cables are usually class-compliant, your Mac will recognize the MIDI signal without needing the original Radium drivers.
External Power: When using the MIDI OUT workaround, you may need an external 9V DC 500mA power supply, as the USB cable may not provide enough power to the keyboard in this configuration. Troubleshooting Tips for Older Macs
If you are on a compatible legacy OS (e.g., 10.10 or older):
M Audio Radium49 compatible with Catalina? Workaround? : r/ableton
is an "end of line" legacy MIDI controller that is not officially supported on modern macOS versions. While it was a popular, budget-friendly choice for synth-style playing, using its direct USB connection on current Macs requires unofficial workarounds. Mac Compatibility & Driver Status
Official Support: M-Audio has not released updated drivers for the
in years; the last official drivers were for OS X 10.8.5 (Mountain Lion). If the lack of drivers is a dealbreaker,
Modern macOS (Ventura, Sonoma, etc.): The device is not class-compliant, meaning it will not simply "plug and play" via USB on modern systems. Workarounds: MIDI-to-USB Interface: The most reliable way to use a
today is to ignore its built-in USB port for data. Connect a standard MIDI cable from the Radium's MIDI Out to a modern, class-compliant MIDI-to-USB interface (like the iConnectivity mio or Roland UM-ONE). You may still need to plug the Radium into a wall outlet or a USB power brick for power.
Third-Party Drivers: Some users have had success using community-developed drivers (such as those found on GitHub) or by manually installing older Midisport drivers, though this is technical and potentially unstable. Performance Review
having trouble with a radium 49 key stati… - Apple Community
Quick, practical guide — M-Audio Radium 49 on Mac
If you want, tell me your macOS version and whether the device shows in System Information — I’ll give exact steps for that setup.
(related search suggestions appended)
M-Audio Radium 49 is a legacy "end-of-life" product that is no longer officially supported
on modern macOS versions. Because it is "pre-class compliant," it requires specific drivers that were last officially updated for Mac OS X 10.8.5 (Mountain Lion) Driver Compatibility & Workarounds
If you are on a modern Mac (macOS Catalina 10.15 or newer, including Sonoma/Ventura), the official USB drivers will not work. Here are your options: Use a MIDI-to-USB Interface (Recommended)
: This is the most reliable workaround. Instead of using the Radium’s built-in USB port, connect a standard MIDI DIN-to-USB cable from the Radium's Windows 10/11 has better backward compatibility for legacy
port to your Mac. This bypasses the need for legacy Radium drivers, as most modern MIDI-to-USB interfaces are "class-compliant" and work automatically. Legacy Drivers (Old Systems Only)
: For older macOS versions (10.10 and below), users have successfully used the MIDI USB Driver v3.5.3 Audio MIDI Setup Utility
: If using an older OS, you can manually try to "Create a New MIDI Device" in the Apple Audio MIDI Setup
utility (Applications > Utilities) to see if the system can recognize the input. Where to Find Files Official Legacy Support : You can search for older drivers on the M-Audio Legacy Downloads Troubleshooting Guide : Review the M-Audio Troubleshooting Guide for general tips on MIDI device recognition. Note on Hardware
: Some users report that older Radium 49 units may require an external 9V DC power supply
if the USB port on newer Macs does not provide sufficient "parasitic" power. zZounds.com MIDI-to-USB interface to get your keyboard working on a modern Mac? Legacy product documentation, driver and software downloads
The M-Audio Radium 49 holds a special place in the history of home recording. Released in the early 2000s, it was one of the first affordable, semi-weighted 49-key controllers that offered programmable faders and a sleek blue aesthetic. For many producers, it was their first MIDI controller.
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.
This long-form guide covers everything you need to know about getting this legacy hardware running on modern macOS systems, the difference between Class Compliant and Driver-dependent modes, and how to program the interface once it is connected.
Bome MIDI Translator Classic (free) or Pro (paid) is the definitive solution for legacy MIDI controllers. It acts as a virtual driver, listening for the Radium’s proprietary messages and translating them into standard MIDI CC that any modern Mac app understands.
Step-by-step with Bome: