UAD v9.1 (available here) is fully qualified with macOS Sierra. There are currently no known UAD compatibility issues with UAD v9.1 and macOS Sierra.
Important: Install UAD v9.1 before upgrading to macOS Sierra. All earlier versions of UAD software (except 9.0.0 & v9.0.2) are incompatible with macOS Sierra.
|Apollo Thunderbolt (all models)||Compatible|
|Apollo FireWire (1 Unit)||Compatible|
|Apollo 16 FireWire (1 Unit)||Compatible|
|UAD-2 Satellite Thunderbolt||Compatible|
|UAD-2 Satellite FireWire||Compatible|
|UAD-2 PCIe cards||Compatible|
|Soundcraft Realtime Rack||Compatible (v8.6.3 only)|
|Apollo FireWire (2 Units)||Compatible|
|Apollo 16 FireWire (2 Units)||Compatible|
UAD v9.1 (and higher) is fully tested and compatible with released versions of macOS 10.10 Yosemite, 10.11 El Capitan, and 10.12 Sierra. Previous macOS versions may be compatible, but they are no longer tested or supported.
Known Issue with earlier UAD Software and macOS Sierra
Note: The following issue does NOT occur when UAD v9.1 (or higher) is installed before upgrading to macOS Sierra.
Symptom: Installing UAD v8.7 or earlier software onto a macOS Sierra system, or upgrading to macOS Sierra with earlier UAD software installed, may cause the system to fail on startup.
Solution: If the computer will not startup, start the computer in Safe mode by holding down the Shift key during startup, then run the Uninstall Universal Audio Software application located in /Applications/Universal Audio. After uninstalling, install v9.1 (or higher), or install/restore a previous version of macOS.
Note: This symptom/solution also applies to Soundcraft Realtime Rack software v7.4.3. However, Realtime Rack software v8.6.3 is fully compatible with macOS 10.12 Sierra.