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The built-in USB port provides direct computer connection without requiring additional audio interfaces.
  • Provides 4 stereo playback devices (from PC to “USB inputs” on the console).
  • Provides 4 stereo recording devices (“USB outputs” from console to PC).
This means the computer can send 4 stereo signals to the console and receive 4 stereo signals from it.
Although USB is technically a data port, in this context we refer to it as USB audio inputs and outputs.
  • The console’s “USB outputs” correspond to USB recording devices in Windows.
  • The console’s “USB inputs” correspond to USB playback devices in Windows. Understanding this is essential to properly comprehend the signal flow.
Signal routing to USB outputs (i.e., USB recording devices in Windows) is configured from the console in the SETTINGS → OUTPUTS screen

USB Driver Installation

The following description refers to the built-in USB connector on the Rear Panel of UX24 and UX18 models.
To install an external UDX-USB adapter, see the section: UNIDEX External Adapters
UNIDEX requires its own USB driver for the device to be properly recognized in Windows.

Installation steps:

  1. Connect the console’s USB port to the PC using the supplied USB A/B cable.
Using poor quality or damaged cables may cause the computer to incorrectly recognize the USB device or identify it with errors.
  1. Download the driver: Downloads Center
  2. Run the installer and follow the instructions.

USB Devices in Windows

Once the driver is properly installed, Windows will show: Playback devices (outputs from PC to UNIDEX):
  • Solidyne USB OUT 1 → USB Input 1 (UX24)
  • Solidyne USB OUT 2 → USB Input 2 (UX24)
  • Solidyne USB OUT 3 → USB Input 3 (UX24)
  • Solidyne USB OUT 4 → USB Input 4 (UX24)
Recording devices (sends from UX24 to PC):
  • Solidyne USB IN 1 ← USB Output 1 (UX24)
  • Solidyne USB IN 2 ← USB Output 2 (UX24)
  • Solidyne USB IN 3 ← USB Output 3 (UX24)
  • Solidyne USB IN 4 ← USB Output 4 (UX24)
These outputs are assigned from the screen at: SETTINGS → OUTPUTS

ASIO 3.0 Compatibility

ASIO 3.0 compatibility allows shared and simultaneous use of different USB channels between different applications, even if they are not ASIO compatible.

Advanced application example:

  • Automation software plays music through USB 1 via WDM.
  • Another processing software (like an ASIO effects host) takes the USB 2 channel returning from the console and applies real-time VST effects to microphone voices.
Using external VST effects