... -16 and EN54-24 Certificated Voice Evacuation System Class D amplifier for voice alarm system, 120W to 500W per channel. DescriptionsA ... on, overheat, short circuit and overload.Features* Class-D power amplifier for voice evacuation system* 120W, 240W, 350W & 500W by one ... , 18A, 25A, 13A, 26A, 36A, 50A, 19.5A, 52A, 72A, 100A Audio Input (balance) Distortion <1% (RMS) , 1KHzFrequency 40Hz~20KHz Audio ...