日本AIWA公司最近推出内带放大器的便携式扬声器系统,其型号为SC-A9。电源可使用4节5号电池或交流适配器。它可用于不带扬声器的袖珍放音机和袖珍CD唱机。它具有自动电源开关,当有信号输入时接通电源;无信号输入时自动关闭电源。每个放大器的音量均可以控制,内带放大 Japan’s AIWA recently introduced a portable speaker system with an amplifier, model number SC-A9. Power supply can use 4 AA batteries or AC adapter. It works with compact players and compact CD players without speakers. It has an automatic power switch, when there is a signal input power; no signal input automatically turn off the power. The volume of each amplifier can be controlled, with amplification