If you experience problems trying to finely tune the volume on your amplifier, the chances are that the input into your amplifier is too high. If the volume is loud enough when the dial on your amplifier is in the 9 o'clock position, but is too loud when the dial has reached the 10 o'clock position. It's likely the result of 'excess gain' (which causes your sound to be too high at lower settings). Our attenuators use precision resistors to reduce the excess, and oxygen free copper conductors to preserve the signal quality as it passes through the attenuator. The opposite applies to turntables with low level phono outputs, they require a pre-amplifier to allow them to be used with a standard line level inputs commonly found on amplifiers.