耳機放大器；耳機放大器電路；耳機擴音器；耳擴
雙語例句
1. Sound headphone also requires a quality amplifier just like a top - grade loudspeaker.
靚聲的耳機就如同高級的喇叭,同樣需要高素質的放大器來伺候.
2. The amplifier is designed to amplifying the audio signal for the headphone of low - power portable systems.
該放大器主要應用在便攜式移動設備領域,向頭 戴式 受話器提供放大的音頻信號.