The BMC Pure USB 1 Cable - available in 5m length only. BMC Audio refers to their new line of usb cables as "The Active USB Cable".
While audiophile USB cables generally try to limit transmission losses and noise by material tuning, BMC's PureUSB1 provides a better solution.
An active electronic circuit restores, reshapes, and stabilizes the digital USB signal just before entering the DAC.
In addition to this, the Pure USB1 filters the noise on the USB power supply. This solution provides a better USB signal and ultimately sounds better.
High grade USB interconnections enhance the sound quality of the modern DAC very well.
Another advantage of the BMC PureUSB 1 is the reduction of length sensitivity. The USB cable is allowed to be longer without causing losses, so 5.0 meter sounds virtually the same compared to 2.0 meter sound.
BMC's PureUSB1 is available in 2.0 meter and 5.0 meter lengths.