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控制都是基于输出级内的负回授,而
Astoria Classic 在其输出级内没有负回
授。
音色说明
2
主音量水平越高,锐利度
功能的作用越明显。
8. 电源指示灯
电源开关位于 ON 位置时,该指示灯将
亮琥珀色。
9. 待机开关
待机开关与电源开关组合使用,可在使
用前预热放大器,延长输出电子管的寿
。打开放大器前,请务必确保待机开
关处于 STANDBY 位置。
这样,所施加的电压可加热电子管,使
其达到适当的工作温度。大约两分钟后,
电子管将达到正确的工作温度,然后即
可通过将待机开关切换至 ON 位置将其
接通。
为了延长电子管的寿命,在演奏休息期
间,应单独使用待机打开或关闭放大器。
10 电源开关
这是放大器的电源开关。接通该开关后,
电源指示灯将亮琥珀色。
前面板功能(续) 说明
24


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