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Single Ended Triodes (SETs), the ultimate tube lovers dream.

the fuse

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My output tubes are biased around 60mA and I have 100mA fast blow fuses in series with them. I have no proof but I am confident the tubes can withstand the current for the time it takes the fuse to blow.

I currently have a 2 stage DC coupled amp and previously used a 3 stage one for many years with no problems. I know, this isolated case proves nothing but I have no qualms about dc coupling. I use components well below their rated values and protect things with fuses.

In any case the improvement in sound is well worth any additional risk if there actually is any.

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