---
product_id: 389462307
title: "Piezoelectric Earphone High Impedance Ceramic Earpiece Bare Wire Leads Transistor Crystal Radios & DIY Make Electronics Projects 20,000 (20k) Ohm Sensitivity Vintage Classic Style Piezo Electric"
brand: "protechtrader"
price: "129.30 DT"
currency: TND
in_stock: true
reviews_count: 5
category: "Pro Tech Trader"
url: https://www.desertcart.tn/products/389462307-piezoelectric-earphone-high-impedance-ceramic-earpiece-bare-wire-leads-transistor
store_origin: TN
region: Tunisia
---

# 57dB sensitivity at 1kHz 20,000Ω ultra-high impedance 42-inch pre-tinned bare wire leads Piezoelectric Earphone High Impedance Ceramic Earpiece Bare Wire Leads Transistor Crystal Radios & DIY Make Electronics Projects 20,000 (20k) Ohm Sensitivity Vintage Classic Style Piezo Electric

**Brand:** protechtrader
**Price:** 129.30 DT
**Availability:** ✅ In Stock

## Summary

> 🎙️ Hear the past, build the future with every crystal-clear click!

## Quick Answers

- **What is this?** Piezoelectric Earphone High Impedance Ceramic Earpiece Bare Wire Leads Transistor Crystal Radios & DIY Make Electronics Projects 20,000 (20k) Ohm Sensitivity Vintage Classic Style Piezo Electric by protechtrader
- **How much does it cost?** 129.30 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/389462307-piezoelectric-earphone-high-impedance-ceramic-earpiece-bare-wire-leads-transistor)

## Best For

- protechtrader enthusiasts

## Why This Product

- Trusted protechtrader brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Ready-to-Connect Bare Wire Leads:** 42-inch twisted, pre-tinned wires make integration into your electronics kits seamless and solder-ready.
- • **Vintage High-Impedance Powerhouse:** Experience crystal-clear audio with a 20,000 ohm impedance designed for pure, unamplified signals.
- • **Supreme Sensitivity for DIY Mastery:** 57dB sensitivity at 1kHz ensures you catch every whisper of your crystal or transistor radio projects.
- • **Classic Ceramic Build with Modern Reliability:** Durable ceramic earpiece paired with a brass diaphragm for enhanced longevity and consistent performance.
- • **Perfect for Millennial Makers & Retro Tech Enthusiasts:** Ideal for hands-on professionals craving authentic vintage audio experiences and innovative DIY experiments.

## Overview

This Piezoelectric Earphone features a vintage-style ceramic earpiece with an ultra-high 20,000 ohm impedance and 57dB sensitivity at 1kHz, optimized for crystal and transistor radio DIY projects. Equipped with 42-inch pre-tinned bare wire leads, it offers easy integration for electronics enthusiasts and professionals. Its durable brass diaphragm and molded twisted wire ensure reliable, long-lasting performance, making it the go-to choice for millennial makers seeking authentic, sensitive audio components.

## Description

Ceramic earphone/Crystal earpiece for Transistor and Crystal Radios, Sensitive Electronics Projects, Lab research and other DIY experiments requiring a very sensitive high impedance earpiece. Piezoelectric earphones also known as crystal earphones, ceramic earphone, and piezo earpieces are the most sensitive earphones. They are in fact many times more sensitive than even the most sensitive magnetic earphones, dynamic earphones, or electrostatic earphones that you may use on your smartphone. Sensitive earphones have a very high impedance, which is measured in ohms and should not be used directly with a modern amplified radio. Crystal Earphones are so sensitive and require so little power to operate that you can hear a small 'click' just by touching the two bare leads together. Crystal radios will not work with modern earphones or 'earbuds' as they are designed to operate with amplified audio sources found in today's electronic devices. Crystal Earphones are used in the construction of the crystal radio and in some science experiments such as listening to electric fish. Specifications: ▪ Impedance: 20K ohm ▪ Resistance: 20M ohm ▪ Capacitance: 15,000 pf ▪ Sensitivity: 57db at 1KHz ▪ Frequency Range: 200 - 8,000Hz ▪ Operation Temperature: -20 to 60 degree Celsius ▪ Wire: 42-inch Molded twisted Wire ▪ Connector: Tinned Leads for DIY Connections ***Please Note: These are the manufacturer specifications and may vary slightly in each production unit

Review: I build a lot of different types of radios and related stuff. Use these earphones on very basic crystal/fox hole type sets. OK price, decent sound and no issues with any of them. This radio is printed on a FLASH FORGE 3D printer (reviewed on desertcart), uses coil wire and a germanium diode also from desertcart. A good ground, a long enough antenna (both with the same coil wire as the coil) and you can listen to local AM broadcasts. No matter how many I make, it is always fun when the static softens and a voice or music is clear. And it is powered purely by the radio waves themselves.
Review: Écouteur à cristal (haute-impedance) pour project, três bonne qualité

## Features

- Perfect to make electronics projects like Crystal or Transistor Radios DIY Electronics Kits
- High 20,000 ohm impedance with resistance over 20 million ohms and a capacitance of 15,000 pf
- Rated Sensitivity of 57db at 1KHz in the frequency range from 200 to 8,000Hz
- Classic style highly sensitive molded earpiece with 42-in twisted wire with pre-tinned bare wire connections (Also available with 3.5mm Aux Headphone Style Phono Connector - See B01JEOH3QQ)
- 2022 Updated Model Available (See B09MZML96L) Featuring All Soldered Connections and a Brass Diaphram for Increased reliability and life. PiezoElectric Crystal Earpiece for DIY Electronics Kits

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B071JWPTT9 |
| Additional Features | High Sensitivity Vintage Style Ear Phone, Piezo Electric 20k ohm Impedance Ear Piece |
| Age Range Description | Adult |
| Audio Driver Type | Piezoelectric Driver |
| Best Sellers Rank | #16,318 in Electronics ( See Top 100 in Electronics ) #849 in In-Ear Headphones |
| Brand | ProTechTrader |
| Built-In Media | Piezoelectric Earphone with Bare Wire Leads for Crystaol Radios |
| Cable Features | Retractable |
| Color | (Beige - Bare Wire Leads) |
| Compatible Devices | Crystal Radios, Transistor Radios |
| Connectivity Technology | Wired |
| Control Method | Touch |
| Customer Reviews | 4.5 4.5 out of 5 stars (206) |
| Earpiece Shape | in-ear |
| Enclosure Material | Ceramic |
| Frequency Range | 200 - 8,000Hz |
| Headphone Folding Features | In Ear |
| Headphone Jack | 3.5 mm Jack |
| Headphones Ear Placement | Over Ear |
| Impedance | 20000 Ohms |
| Is Electric | Yes |
| Item Weight | 0.22 Ounces |
| Manufacturer | ProTechTrader |
| Model Name | Piezo-bare |
| Model Number | Piezo-bare |
| Noise Control | None |
| Number of Items | 1 |
| Specific Uses For Product | DIY Electronics |
| UPC | 789048342869 |
| Unit Count | 1 Count |
| Wireless Technology | RF |

## Product Details

- **Brand:** ProTechTrader
- **Colour:** (Beige - Bare Wire Leads)
- **Ear placement:** Over Ear
- **Form factor:** In Ear
- **Impedance:** 20000 Ohms

## Images

![Piezoelectric Earphone High Impedance Ceramic Earpiece Bare Wire Leads Transistor Crystal Radios & DIY Make Electronics Projects 20,000 (20k) Ohm Sensitivity Vintage Classic Style Piezo Electric - Image 1](https://m.media-amazon.com/images/I/61TseA8aIQL.jpg)

## Available Options

This product comes in different **Number Of Items** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by C***0 on 13 April 2021*

I build a lot of different types of radios and related stuff. Use these earphones on very basic crystal/fox hole type sets. OK price, decent sound and no issues with any of them. This radio is printed on a FLASH FORGE 3D printer (reviewed on AMAZON), uses coil wire and a germanium diode also from AMAZON. A good ground, a long enough antenna (both with the same coil wire as the coil) and you can listen to local AM broadcasts. No matter how many I make, it is always fun when the static softens and a voice or music is clear. And it is powered purely by the radio waves themselves.

### ⭐⭐⭐⭐⭐ Review
*by L***R on 20 October 2024*

Écouteur à cristal (haute-impedance) pour project, três bonne qualité

### ⭐⭐⭐⭐⭐ Review
*by O***U on 4 July 2022*

Der Ohrhörer erfüllt 100%ig die Angaben des Herstellers; er funktioniert (korrekte Anpassung wohl vorausgesetzt) sehr gut. - Ich bedanke mich für diesen Artikel. Gruß o.thu

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-07-09*