In high-quality audio products, power supply design is critical. Our design goal was to utilize the power in the USB interface, which comes from the computer or server, without significant compromises in sound quality.
Essentially, the Audiophilleo comprises two independently powered, and electrically isolated subsystems:
This approach is important for minimizing jitter, and requires two independent power supplies:
The regenerative power supply has these advantages:
For the dual, we include an external power supply. The trigger usually need quite a bit of current—more than one would typically want to draw through a USB interface. This external power supply is also galvanically isolated from the rest of the device and cannot influence sound quality.