*Please check with your local store on stock availability
With this option board you can add a 24/192 asynchronous USB DAC to the following headphone amps: HPA V100, HPA V181, HPA V200, HPA V220 and HPA V281.
Drivers are avalable for both Microsoft and Apple computers (on our download page). Linux systems are also supported but, do not require a driver.
The USB input has priority over all other inputs and will mute these when valid data is received.