7. Protect Indicators
These red LED indicate that the channel is in Protect mode. When the channel goes into protect mode all output for that channel will turn off by output relay. The protect LED will light when overheating or other severe problems occur. This is to protect any speakers connected to the channel. These LEDs light for approximately five seconds whenever the amplifier is powered on, and fade slowly when the amplifier is powered off. This is normal operation.
8. Channel input level control
These two 21-position controls adjust input level for their respective amplifier channels. In Bridged Mono Mode, only channel 1 input level control is used to adjust signal level. In Parallel Mode, both input level control are used to adjust signal level for their respective amplifier channels. At their fully counter-clockwise position, the signal is attenuated by more than 80dB. At their fully clockwise position, the signal is at unity gain. When 0 dBu of signal arrives at the input jacks and the Channel input level controls are set to their fully clockwise position, the amplifier delivers full power output.
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