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Re: not to worry....

There is no outright protection like a relay circuit or the like.

The 6AS7G has what amounts to an internal fuse for each section. see

http://www.atma-sphere.com/papers/visual.html

Beyond that, the B+ fuse is set to a value that will blow if the amp is run beyond its means. Over the years this technique has been very effective.

Assuming an 8 ohm speaker your fuse will blow at 12 watts. Is that what you want?

-Ralph


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