This graph reveals how the distortion products created by the D-A converter reduce in level with the input signal. An input of -1dBFS produces the distortion shown by the light green bars – most odd order harmonics. An input of -10dBFS produces less distortion (red bars), but still mostly odd harmonics, while an input of -20dBFS produces very little distortion (blue bars) and with little discernable harmonic colouration.