Whether or not it is OK to touch amplifier tubes is a matter of some debate. Some people say that it is perfectly safe to touch tubes with bare hands, while others warn that it can damage the tubes and shorten their lifespan.
The truth is that there is some evidence to support both sides of the argument. On the one hand, some studies have shown that touching the glass envelope of a tube can transfer skin oils and fingerprints to the surface of the glass. These oils and fingerprints can overheat and cause the glass to crack, or they can act as a catalyst for dirt and dust to build up on the tube, which can also cause the tube to overheat and fail.
On the other hand, some people argue that the risks of touching tubes are overstated. They point out that tubes were originally designed to be handled and replaced by hand, and that many vintage tube amps have been used for decades without any problems, even though the tubes have been touched many times.
Ultimately, the decision of whether or not to touch amplifier tubes is up to you. However, if you do choose to touch tubes, it is important to take some precautions to minimize the risk of damage. Here are some tips:
- Only touch tubes when they are cool. Hot tubes can burn your skin.
- Only touch tubes with clean, dry hands. Avoid touching tubes with sweaty or oily hands.
- Be careful not to touch the glass envelope of the tube. If you do touch the glass, wipe it clean with a dry cloth.
- Avoid touching the pins on the tube. If you do touch the pins, wipe them clean with a dry cloth or alcohol wipe.
If you are concerned about damaging your amp tubes, it is best to avoid touching them altogether. However, if you need to touch a tube, be sure to follow the safety tips above.
Here is what some tube amp manufacturers have to say about touching tubes:
- Fender: Fender recommends that you avoid touching the glass envelope of the tube. If you do touch the glass, wipe it clean with a dry cloth.
- Marshall: Marshall recommends that you only touch tubes when they are cool and that you avoid touching the glass envelope of the tube.
- Vox: Vox recommends that you avoid touching the glass envelope of the tube. If you do touch the glass, wipe it clean with a dry cloth.
Overall, it is up to you to decide whether or not to touch amplifier tubes. If you do choose to touch tubes, be sure to follow the safety tips above to avoid damaging them.
