High grade USB interconnections enhance the sound quality of a modern DAC amazingly.
While audiophile USB cables generally try to limit transmission losses and noise by material tuning, B.M.C.'s PureUSB 1 provides a better solution: An active electronic circuit restores and reshapes the digital USB signal just before entering the DAC. Beside this it filters the noise on the USB power supply.This solution provides a better USB signal and ultimately sounds better. Another advantage is the reduction of length sensitivity. The cable is allowed to be longer without causing losses, so 5 meters sounds virtually the same as the 2 meters.
B.M.C.'s PureUSB 1 is available in 2m and 5m.
The Sound of Nature