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The amplifier can go on functioning in these conditions but power will inevitably decrease. 1 ON (green LED) It indicates the amplifier is on. 2 1 2 3 4 5 10 9 11 8 6 7 A CHANNELS (Level) It adjusts the amplifier A channels input sensitivity and sets its output level. 3 FUNCTIONS AND CONTROLS 17 CONFIGURATIONS CH A-HI X-OVER IN-SELECT F2 12dB CH B-LO IN B/ PRE OUT F2 12dB F2 12dB OFF ON 1IN 2IN OFF ON 1IN 2IN OFF ON 1IN 2IN OFF ON 1IN 2IN 1 2 3 4 PRE OUT IN B PRE OUT IN B CONFIG. 24dB F1 F1 Slop