The standard preamplifier output level of a signal from an audio source other than a turntable. Usually between 100mV and 1V, but may be as high as 5V or more from some preamplifiers. CD players, VCRs, Laserdisc Players, etc., are connected in a system at line level, usually with shielded RCA type interconnects. Line level is before power amplification. In a system with separate pre-amp and power-amp, the pre-amp output is line level. Many surround sound decoders and receivers have line level outputs as well.