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Review on 🎧 High Impedance Piezo Electric Crystal Earphone: Perfect for Transistor Radio and Crystal Radios DIY Projects by Trevor Palmer

Revainrating 4 out of 5

Doesn't work anymore, but I found a solution?

The earpiece worked perfectly at first. Then it stopped working. I plugged in and the cables connecting to the earpiece are fine. So I removed the clear extension cord and tapped the panel inside with a screwdriver. It started working and is working fine now. Wanted to use it with my vintage SW radio which has a mono headphone jack.

Pros
  • Cool
Cons
  • Almost everything ok