I've returned a Technisat Digicorder S2 and a standard Humax iCord to the respective dealers due to the unpleasant noise and was a bit desperate. This model of iCord other hand, is a dream. The hard disk is not at all to hear and the fan whispers in absolute peace and quiet just a pleasant frequency to himself. When you turn the TV sound when you hear him no longer at. The device has on an extremely sound sensitive person like me waiting.