Pro-Ject Turntable Earthing Lead Though vinyl is one of our most cherished and enjoyed music platforms, the equipment used to playback records is - by its very nature - prone to issues and problems that can disrupt your experience. One of the most common issues reported to us is mains hum, and though this can be a problem it is almost always not down to a faulty turntable; instead it's because there is not a strong enough 'true' earth in your system. All turntables are prone to attract some level of noise, however, most (like all Pro-Ject record players) are engineered to reduce this tendency as much as possible - so you often only hear it with the amplifier volume on maximum and no record playing. When there is a noise that's audible during normal playback it is often due to poor .