Multi-channel cinema amplifier with power-sharing, messaging and multi-phase power supply

An audio playback system for immersive audio content comprising:

• an amplifier having a power supply coupled to mains power and providing power to each speaker of a plurality of speakers over respective speaker wires through channel-based speaker feeds;
• a multi-phase power supply stage powering a plurality of audio channels, each providing respective speaker feeds to a plurality of speakers;
• a monitor component coupled to the power supply and configured to monitor operating characteristics of the amplifier and the plurality of speakers;
• and
• a power controller coupled to the monitor components and configured to adjust per-channel gain values based on one or more operating characteristics monitored by the monitor component.

A method of amplifying audio signals comprising:

• powering, by a multi-phase power supply stage coupled to mains power, a plurality of audio channels each providing respective speaker feeds to a plurality of speakers;
• monitoring operating conditions of the amplifier and the plurality of speakers to predict and detect a failing speaker or channel;
• and
• adjusting, by a power controller, per-channel gain values based on one or more of the monitored conditions.