An audio system, comprising: an audio amplifier, and a power delivery circuitry comprising a transformer, a power storage, a voltage regulator, and a power limiter configured to limit an input power to the power delivery circuitry to or below a predetermined maximum input power level, wherein the power limiter is configured to limit said input power to the transformer of the power delivery circuitry, the transformer is configured to deliver in parallel power to the power storage and to at least the audio amplifier, wherein the input power to the transformer is limited by means of the power limiter configured to monitor the input power to the transformer and to feed into a pulse-width modulation controller (120, 230) to modify a current flow through a power switch into the transformer, and wherein an output power limit of a first DC output of the transformer is defined by the predetermined maximum input power level multiplied by a transformer efficiency, characterized in that the first DC output of the transformer is configured to deliver power to the audio amplifier when a voltage of the first DC output is above a set point of the voltage regulator, and the power delivery circuitry is further configured to provide for a burst operation, in which the power delivery circuit temporarily provides an output power to the audio amplifier that exceeds the output power limit of the first DC output, wherein, during the burst mode of operation, the power delivery circuitry is configured to deliver power from the power storage to the audio amplifier via the voltage regulator coupled between the power storage and the audio amplifier and configured to not deliver power to the audio amplifier from the first DC output, when a voltage delivered to the audio amplifier from the first DC output decreases to or below the set point of the voltage regulator due to a power demand of the audio amplifier exceeding the output power limit of the first DC output, and the transformer is further configured to redirect power from a second DC output to the power storage for charging the power storage when the power demand of the audio amplifier is less than the output power limit of the first DC output and the input power to the power delivery circuitry is below the predetermined maximum input power level of the power limiter. an audio amplifier, and a power delivery circuitry comprising a transformer, a power storage, a voltage regulator, and a power limiter configured to limit an input power to the power delivery circuitry to or below a predetermined maximum input power level, wherein the power limiter is configured to limit said input power to the transformer of the power delivery circuitry, the transformer is configured to deliver in parallel power to the power storage and to at least the audio amplifier, wherein the input power to the transformer is limited by means of the power limiter configured to monitor the input power to the transformer and to feed into a pulse-width modulation controller (120, 230) to modify a current flow through a power switch into the transformer, and wherein an output power limit of a first DC output of the transformer is defined by the predetermined maximum input power level multiplied by a transformer efficiency, characterized in that the first DC output of the transformer is configured to deliver power to the audio amplifier when a voltage of the first DC output is above a set point of the voltage regulator, and the power delivery circuitry is further configured to provide for a burst operation, in which the power delivery circuit temporarily provides an output power to the audio amplifier that exceeds the output power limit of the first DC output, wherein, during the burst mode of operation, the power delivery circuitry is configured to deliver power from the power storage to the audio amplifier via the voltage regulator coupled between the power storage and the audio amplifier and configured to not deliver power to the audio amplifier from the first DC output, when a voltage delivered to the audio amplifier from the first DC output decreases to or below the set point of the voltage regulator due to a power demand of the audio amplifier exceeding the output power limit of the first DC output, and the transformer is further configured to redirect power from a second DC output to the power storage for charging the power storage when the power demand of the audio amplifier is less than the output power limit of the first DC output and the input power to the power delivery circuitry is below the predetermined maximum input power level of the power limiter.