Source-Nexus I/O Basic 1.1 - Catalina Compatibility Issues
This article contains troubleshooting information
Source-Nexus I/O Basic | 1.1 | macOS Catalina (10.15)
Various issues can occur including the Source-Nexus I/O driver not being installed and not showing as an audio input or output device on the system, artifacts in the audio passing through the driver, or no audio passing through the driver at all (despite proper system microphone permissions).
Source-Nexus I/O Basic 1.1 uses an older version of the Source-Nexus I/O driver that is not fully compatible with macOS Catalina.
Installing the latest Source-Nexus I/O Free Driver (1.2.171), which is compatible with macOS Catalina, allows Source-Nexus I/O Basic 1.1 to function properly. See the following steps for the proper installation procedure, as it needs to be done it a specific order.