Other converters only convert the voltage to 110v but do not change the frequency (50 hertz is supplied in Europe). Automatically converts the voltage and frequency of the local electrical wall outlet, thus eliminating common problems encountered when the frequency is not converted, such as: poor performance, excessive noise This power converter achieves impeccable results because unlike conventional transformers/converters, this item converts both the voltage and frequency at your foreign destination (whatever that may be) to 110v/60hz, which is exactly what you would get if your device was plugged into the US wall outlet. US Other converters convert only the voltage to 110v but not the frequency (determined by the country which is usually 50 hertz in Europe and other parts of the world.
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