Each supply has a timed relay that mutes the audio output until the tubes stabilize.

每种电源都带有延时继电器，它在电子管进入稳定工作状态之前使输出静音。

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Each supply has a timed relay that mutes the audio output until the tubes stabilize.

每种电源都带有延时继电器，它在电子管进入稳定工作状态之前使输出静音。

youdao