Enhancing speaker protection accuracy

An audio amplifier system comprising:

• an amplifier;
• a speaker coupled to the amplifier;
• and
• at least one current-sense path configured to sense a current supplied to the speaker by the amplifier, wherein the at least one current-sense path includes a circuit configured to reduce a common-mode voltage component associated with the at least one current-sense path, wherein the circuit comprises a double sampling network.

An audio device comprising:

• a speaker;
• an amplifier configured to receive an input signal and output an amplified signal to the speaker;
• and
• a plurality of amplifier stages coupled to the amplifier and including:
• a first amplifier stage with at least two intermediate amplifiers;
• and
• a second amplifier stage comprising:
• a circuit to reduce a common-mode voltage component of an output signal of the amplifier first stage;
• a summing stage coupled to the circuit;
• and
• a final amplifier coupled to the summing stage.