在爱华普及型随身听中常采用一单片放音集成电路MM1336D,其内部包含有:一部放音机所需的全部电路、双声道前置放大、功率放大及电子稳速等。由于该类芯片外围元件少,因此,电路设计上得到了简化,这样不仅节省了生产成本,故障率也相对降低了。 In Epworth Walkman often used a monolithic playback integrated circuit MM1336D, which contains: a radio all the necessary circuits, dual-channel preamplifier, power amplifier and electronic speed and so on. Due to the chip peripheral components less, so the circuit design has been simplified, so that not only saves on production costs, the failure rate is relatively reduced.