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Configuration for selecting balanced or unbalanced audio inputs.
Details the BR6521/6522 power transistors and related components.
Defines the terminal for connecting the speaker system.
Contains project name, part number, drawing date, and revision.
Details the main power connection, internal fuse, and voltage selection.
Circuitry for the standby power supply, including voltage regulation.
Circuitry for controlling the unit's power state remotely.
Logic for muting the audio signal and driving status LEDs.