LectroFan High Fidelity White Noise Machine Over 7,000 customers have reviewed this LectroFan High Fidelity White Noise Machine (£50) in the US, and 82 percent of them give it a perfect five stars. It provides 10 fan sounds and 10 ambient noise variations, including white noise, pink noise, and brown noise. Image Source: amazon.co.uk LectroFan High Fidelity White Noise Machine £50 from amazon.co.uk Buy Now