24Front panel controlsWith the front panel buttons all important functions of the PA 1000 E can be operated. All information about the operatingstate of the PA 1000 E is displayed by the LED lamps above the buttons.In the following sections the functions of the front panel controls and display LEDs are explained in detail.On / Off switch Pressing the button briefly switches the device on and off. When theunit is switched on the blue indicator above the button glows.Caution!The mains button is not a mains isolation switch. Even when the LED is notglowing, some parts of the machine are still connected to mains voltage(Standby operation).If you know you will not be using the machine for a long period, we recommendthat you disconnect it from the mains by withdrawing the mains plugs from thewall socket..Source selectionTo select one of the signal sources as the listening source, push thecorresponding button briefly. The LEDS above the source buttons indicatewhich input is currently selected for listening. The audio signals of the selected source device are present at the OUT socketsof IN 5 and can be used for recording. Line input 1or optionally the BALANCED 1 input (see chapter „Installation“).