Expensive equipment typically ship with generic power supplies. This is like putting supermarket fuel in a Ferrari. It deserves the best but isn’t getting it. The generic SMPS power supply (PS) is very noisy. Many upgraded audiophile linear PS are better, but still have huge noise at the rectification frequencies and at multiples 50Hz, 100Hz, 150Hz (or 60, 120, 180 for 60Hz countries) etc. The iPower Elite was designed to deliver the smooth and silent power. It gives your equipment all the silent, clean power of a battery with none of the hassle.