SupaNova is designed like Nova, but with the added benefit of having a built-in ANC (Active Noise Cancellation II) circuit that actively removes mains noise before it enters the amplifier and ruins the sound. The ANC design detects if the phase is correct, if ground is connected and protects the installation against overvoltage in case of, for example, lightning strikes. The ANC circuit eliminates noise from all the chargers, TV boxes and PCs in the home and unlike passive power cleaners, it does so in the audible range too. Probably SupaNova is the only active power cable even near this price, if not just the only one available! The sound quality will get a considerable boost in all constellations you might use it in and give a feeling of really hearing your records/music for the first time.