---
product_id: 67513049
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: "€ 22.59"
currency: EUR
in_stock: true
reviews_count: 8
category: "Pro Tech Trader"
url: https://www.desertcart.hr/products/67513049-piezoelectric-earphone-high-impedance-ceramic-earpiece-bare-wire-leads-transistor
store_origin: HR
region: Croatia
---

# 57dB Sensitivity @1kHz 20kΩ High Impedance 42-inch Pre-tinned Bare Wire 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:** € 22.59
**Availability:** ✅ In Stock

## Summary

> 🎙️ Hear the Past, Build the Future!

## 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?** € 22.59 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/67513049-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

- • **Built to Last:** 2022 updated model features all-soldered connections and a durable brass diaphragm for enhanced reliability and longevity.
- • **DIY Dream Essential:** Ideal for hobbyists and pros alike, this high-impedance earpiece is your go-to for building vintage-style radios and electronics kits.
- • **Unmatched Sensitivity:** 57dB rated sensitivity ensures crisp audio reception across 200-8,000Hz, perfect for crystal and transistor radios.
- • **Effortless Integration:** Comes with 42-inch twisted pre-tinned bare wire leads for seamless soldering and custom DIY setups.
- • **Vintage Vibes, Modern Precision:** Classic ceramic piezoelectric earpiece with a timeless design that powers your DIY electronics projects with authentic sound clarity.

## Overview

This ProTechTrader piezoelectric earphone offers a high 20,000 ohm impedance and 57dB sensitivity, delivering vintage-style audio clarity for crystal and transistor radio DIY projects. Featuring a ceramic enclosure, 42-inch pre-tinned bare wire leads, and an updated brass diaphragm for durability, it’s engineered for hobbyists seeking authentic sound and reliable performance in electronics kits.

## Description

desertcart.com: 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 : Electronics

Review: Great service and quick delivery... - Good item for the price..
Review: Just like when I was a kid - My son recently discovered crystal/trench radios and wanted to try his hand at making one. He asked for a piezo earpiece and this is the one I decided to grab for him. Its just like the one I used when I was his age to make a radio. Worked flawlessly. Grab one and get building a radio!

## 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 | #85,485 in Electronics ( See Top 100 in Electronics ) #3,946 in Earbud & In-Ear Headphones |
| Brand | ProTechTrader |
| Brand Name | 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 out of 5 stars 212 Reviews |
| Ear Placement | In Ear |
| Earpiece Shape | in-ear |
| Enclosure Material | ceramic |
| Form Factor | In Ear |
| Frequency Range | 200 - 8,000Hz |
| Headphone Folding Features | In Ear |
| Headphone Jack | 3.5 mm Jack |
| Headphones Ear Placement | In 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 Projects |
| UPC | 789048342869 |
| Unit Count | 1.0 Count |
| Warranty Description | 1 Year |
| Wireless Technology | RF |

## Product Details

- **Brand:** ProTechTrader
- **Color:** (Beige - Bare Wire Leads)
- **Ear Placement:** In Ear
- **Form Factor:** In Ear
- **Impedance:** 20000 Ohm

## 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)
![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 2](https://m.media-amazon.com/images/I/51+-2fi9dmL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great service and quick delivery...
*by J***T on July 27, 2025*

Good item for the price..

### ⭐⭐⭐⭐⭐ Just like when I was a kid
*by M***N on August 5, 2024*

My son recently discovered crystal/trench radios and wanted to try his hand at making one. He asked for a piezo earpiece and this is the one I decided to grab for him. Its just like the one I used when I was his age to make a radio. Worked flawlessly. Grab one and get building a radio!

### ⭐⭐⭐⭐⭐ Good quality
*by L***E on December 14, 2024*

Have used in several different circuits. No problem. Recommend

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-03-04*