10 ON/STBY: the green light comes on when the equipment is in normal operatingmode and it goes orange when it is in standby or low consumption mode(STANDBY). LEVEL: This flashes when you adjust the general level of the device. It also lightsup during special adjustment modes, input levels (see section 4.2. Special activesource selection mode and setting adjustments) BASS: This lights up during special adjustment modes bass frequencies (seesection 4.2. Special active source selection mode and setting adjustments) TREBLE: This lights up during special adjustment modes, treble frequencies (seesection 4.2. Special active source selection mode and setting adjustments) LINE1, LINE2, LINE3/MIC: These light up during special modes, selection ofactive sources and adjustments (see section 4.2. Special active sourceselection mode and setting adjustments)4.5. Micro switches on the rear panel REMOTE: Turn on (ON) the remote control from the WPmVOL or WPmVOL-SR wallpanel connected to the REMOTE port. NOISE GATE: Turn on (ON) or turn off the noise gate function for the LINE3/MICinput. When this function is active the microphone input is muted whilst there is nosignal above the function activation threshold, so the equipment rejects backgroundnoise captured by the microphone connected to it. TALKOVER: On or off according to the priority of the LINE3/MIC input over the lineinputs (LINE1 or LINE2). When the TALKOVER function is on, the LINE3/MICsignal will attenuate the selected line (LINE 1 or 2) when the activation thresholdset is reached. AUTO STANDBY: Switch the AUTO STANDBY function on (ON) or off. When thefunction is on, the CA120 will automatically go into STANDBY or low consumptionmode in the absence of audio signals in its inputs. STEREO / MONO (ST/MONO): Select the work mode of the amplified outputs of theunit:o ST: Work in stereo mode L / Ro MONO: Work in MONO mode, both channels amplifying the L+R signal.