It will not hurt anything to use that tube.

Tubes Asylum

Questions about tubes and gear that glows. FAQ

In Reply to: JJ 2a3-40 in the MOTH 2A3 amp posted by DannyB on June 16, 2020 at 11:51:24:

The filament rating os 2.5v with 2.5 amps, the same as a traditional 2A3.
If possible, you might check the bias of the tube in circuit to make sure it is not pulling too much or too little B+ current, but in general, this should not be an issue. You will not get any more power from your Moth, but you may like the sound.

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Follow Ups Full Thread

Topic - JJ 2a3-40 in the MOTH 2A3 amp - DannyB 11:51:24 06/16/20 (2)

It will not hurt anything to use that tube. - Chip647 06:00:27 06/18/20 (1)

RE: It will not hurt anything to use that tube. - DannyB 06:28:00 06/18/20 (0)

Follow Ups

It will not hurt anything to use that tube. - Chip647 06:00:27 06/18/20 (1)

RE: It will not hurt anything to use that tube. - DannyB 06:28:00 06/18/20 (0)

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