Do I need to replace my driver tube every time I replace my power tubes?

我每次更换后级电子管的时候是不是必须把前级管也一起换？

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Tip: module power tube feet with material, defined if with product label labelling shall prevail.

提示：模块电源的引脚定义如果与资料不符，则以产品标签上的引脚标注为准。

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Heater can be designed into double power tubes and single power tube according to the customers request.

加热器可根据用户的要求设计成双功率管和单功率管。

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Samsung's Vacuum Tube Soundbar (model HW-F750) resolves consumers' desire for pure power and warm, natural sound by integrating a vacuum tube amplifier into a soundbar for the first time.

ENGADGET: Samsung introduces its CES audio hardware, claims a world first

It later submitted another analysis showing the reactor could run at 100 percent power, but the research found the risk of a tube break could reach unacceptable levels after 11 months.

NPR: San Onofre Submits Draft Linked To Restart Bid

Southern California Edison wants to change the plant's federal operating rules to permit the Unit 2 reactor to run at no more than 70 percent power, which company engineers and consultants believe will limit unusual tube wear.

NPR: San Onofre Submits Draft Linked To Restart Bid