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Audiophile headphones often have high impedance because they are typically designed to be used with high-end audio equipment that can deliver more power. This high impedance allows the headphones to maintain their sound quality even when being driven by a low-power source, as it helps to prevent distortion and ensure that the full dynamic range of the audio signal is preserved. Additionally, the high impedance of audiophile headphones can also help to prolong battery life when used with portable audio players, as it reduces the amount of current that needs to be drawn from the device’s battery.