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Questions about tubes and gear that glows. FAQ

May I destroy the player if I use a wrong tube? Not if you are going from OB2 to OB2.

It is just a voltage voltage reference tube that will eat 20mA or so at a given cut-off voltage, in this case 105-108 volts. If you put in a. It is just like a zener. If you replace a OB2 with another OB2 there is absolutely no harm, regardless of the gas in the tube.
Put in a different voltage tube, and you will have other issues.


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