The power amplifier has the following features:
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Floating 100 V or 70 V power outputs
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High efficient amplifier blocks in class-D technology
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Outputs idling and short circuit-protected
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Mains operation 120-240 V (50/60 Hz) and/or 24 VDC emergency backup
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Electronically balanced inputs
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Temperature monitoring function
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Processor control of all functions
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Monitoring of the processor system via watchdog circuit
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Non-volatile FLASH memory for configuration data
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Internal monitoring function
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Integrated audio relays
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Line monitoring function
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Pilot tone and ground fault monitoring function via
PVA‐4CR12 controller or PVA‐4R24 router
The power amplifier is processor-controlled and equipped with extensive monitoring functions. Line monitoring for the CAN bus and for audio transmission allows line interruptions and short-circuits to be detected and indicated to the user.