Tapping the «Hardware» button provides further hardware specificinformation.9.5.3. LevelsSelecting «Levels» opens the corresponding subscreen.The data area of the levels screen provides the followinginformation (starting at the top left):1st line Mute status of each channel.2nd line Loudspeaker setups selected for the individualchannels.Input Current input signal levels of the individualchannels.Output Current output voltages of the individualamplifier channels.Gainred/HeadrRelationship between headroom (Headr) andgain reduction (Gainred) with peak hold for1 sec.Display ranges:Gainred 0 dB Þ +32 dB.Headr –32 dB Þ 0 dB.Impedance Current load impedance values for theindividual amplifier channels.Power Power currently delivered by the individualamplifier channels.Temperature Current temperatures of the individual amplifierchannels.ISP/OSP Indicates whether the input signal (ISP) as wellas the controller output signal (OSP) of theindividual channel are present.d&b D80 Manual 1.8 en 47