The Furutech ADL GT40 USB DAC connects a Windows computer to an external audio system for playback and recording. Its USB audio driver lets Windows communicate with the device, making its supported audio inputs and outputs available to compatible applications.

Key Features

• USB audio recognition: Allows Windows to identify the connected GT40 and expose its available playback and recording endpoints.
• External audio playback: Routes computer sound through the DAC rather than the PC’s built-in audio hardware.
• Recording access: Lets compatible recording software use the GT40’s USB audio input when the device is configured for recording.
• Windows audio integration: Provides access through Windows sound settings, where you can select the device and adjust available audio options.

How to Install

1. Check compatibility before downloading. Confirm that any driver package supplied by the manufacturer explicitly covers the Furutech ADL GT40 USB DAC and your Windows version. For Windows 11, 10, 8, or 7, do not assume that a package intended for another model or operating system will work.

1. Connect and power on the GT40. Use a suitable USB cable and connect directly to the computer where possible. Windows may recognize the device automatically using its built-in USB audio driver, so a separate download may not be necessary.

1. Install a manufacturer-provided driver if required. If the manufacturer offers a compatible package, extract it if needed and follow the included installation instructions. Connect or disconnect the DAC during setup only when instructed.

1. Select the audio device. Open Windows sound settings or the Sound control panel and choose the GT40’s detected USB audio endpoint for playback. For recording, select its input in your recording application and check the device’s input configuration.

1. Test the connection. Play audio at a low volume, then make a short test recording if needed. If the device is missing, try another USB port or cable and check Device Manager before reinstalling anything. Restart Windows if the installer requests it.

Common Issues and Fixes

• Driver install fails or stalls: Run the Furutech/ADL installer as administrator, disconnect the GT40 first, and temporarily disable antivirus. If Windows blocks the driver, install the signed version for your Windows build and reboot before reconnecting the DAC.
• Device not detected: Use a direct rear USB port, not a hub or front-panel port. Try another USB cable, power-cycle the GT40, and check Windows Sound settings for “ADL GT40” under playback/recording. Avoid USB 3.0 ports if detection is intermittent.
• Version conflicts or sample-rate errors: Uninstall any previous ADL/Furutech or generic USB audio driver, reboot, then install one version only. In Windows Sound > Advanced, set a supported format such as 24-bit/96 kHz and close other audio apps before changing sample rates.