Do I really need to use the amplifier ground leads that came with my empeg?
Some people seem not to need or want to connect them, but it is generally recommended that you install the audio grounding leads at your amplifier and ensure that no other part of the exposed audio cable ground touches any part of your car’s frame (i.e. ground). Quoting the empeg user guide: There are two pairs of audio outputs, with an output level of approximately 3.2v RMS. These are driven in a quasi-differential fashion, and so the ground of the audio output is NOT the car earth: it is a ground sense from the amplifier ground to provide better audio quality. You should take care to ensure that the ground of the audio outputs (i.e. the phono/RCA jack exterior) does not touch the car bodywork: if they do, this will not damage anything, but it will result in reduced audio quality. In practice, this usually means wrapping insulation tape around the audio connections after they have been connected to the in-car wiring. You should ensure that the supplied audio grounding leads are used a
