---
product_id: 38312547
title: "Piezo Electric Crystal Earphone Sensitive High Impedance Ceramic Ear Piece 3.5mm for Transistor Radio/Crystal Radios DIY Electronics Projects 1/8 inch Audio Jack Connector Wire Piezoelectric Element"
brand: "protechtrader"
price: "₨6365"
currency: LKR
in_stock: true
reviews_count: 8
url: https://www.desertcart.lk/products/38312547-piezo-electric-crystal-earphone-sensitive-high-impedance-ceramic-ear-piece
store_origin: LK
region: Sri Lanka
---

# 57dB Sensitivity 200-8kHz Frequency 20k Ohm Impedance Piezo Electric Crystal Earphone Sensitive High Impedance Ceramic Ear Piece 3.5mm for Transistor Radio/Crystal Radios DIY Electronics Projects 1/8 inch Audio Jack Connector Wire Piezoelectric Element

**Brand:** protechtrader
**Price:** ₨6365
**Availability:** ✅ In Stock

## Summary

> 🎶 Elevate Your Sound Game with Piezo Perfection!

## Quick Answers

- **What is this?** Piezo Electric Crystal Earphone Sensitive High Impedance Ceramic Ear Piece 3.5mm for Transistor Radio/Crystal Radios DIY Electronics Projects 1/8 inch Audio Jack Connector Wire Piezoelectric Element by protechtrader
- **How much does it cost?** ₨6365 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/38312547-piezo-electric-crystal-earphone-sensitive-high-impedance-ceramic-ear-piece)

## 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

- • **🔧 DIY Dream:** Perfect for STEM projects, this earphone is a must-have for electronics enthusiasts.
- • **⚡ High Impedance Power:** Designed with a robust 20,000 ohm impedance for superior sound quality.
- • **🔌 Unmatched Sensitivity:** Experience crystal-clear audio with a rated sensitivity of 57dB at 1kHz.
- • **🔗 Reliable Connectivity:** Equipped with a 3.5mm audio jack for seamless integration into your projects.
- • **🌍 Lightweight & Portable:** Weighing only 9 grams, take your audio experience anywhere with ease.

## Overview

The Piezo Electric Crystal Earphone is an upgraded model designed for DIY electronics projects, featuring a high impedance of 20,000 ohms, a sensitivity rating of 57dB, and a frequency range of 200 to 8,000Hz. Ideal for crystal and transistor radios, this lightweight earphone is perfect for STEM experiments and offers reliable audio performance with its 3.5mm audio jack.

## Description

Piezo Electric Crystal Earphone Sensitive High Impedance Ceramic Ear Piece 3.5mm for Transistor Radio/Crystal Radios DIY Electronics Projects 1/8 inch Audio Jack Connector Wire Piezoelectric Element

## Features

- NEWER Upgraded Model Available on desertcart (2023): (See B0CC6WRFFB) For a Brass Diaphragm Piezo and All Soldered Wire Connections making it more Sensitive and More Reliable
- Perfect to make electronics projects such as Crystal or Transistor Radios often used in schools and STEM electronic experiments requiring high impedance ear piece
- 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
- Highly sensitive molded earpiece with 42-in twisted wire with 3.5mm (1/8in) headphone audio male wire connector
- Classic Piezo Electric Crystal Earphone for DIY Electronic Projects and Kits

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Control Method | Touch |
| Item Weight | 9 Grams |
| Is Electric | Yes |
| Cable Features | Retractable |
| Additional Features | Lightweight |
| Enclosure Material | Plastic |
| Specific Uses For Product | Crystal Radio |
| Headphone Folding Features | In Ear |
| Earpiece Shape | Rounded Tip |
| Headphones Ear Placement | In Ear |
| Color | (Beige - 3.5mm Headphone Jack) |
| Wireless Technology | RF |
| Connectivity Technology | Wired |
| Headphone Jack | 3.5 mm Jack |
| Frequency Range | 200 - 8,000Hz |
| Audio Driver Type | Piezoelectric Driver |
| Frequency Response | 8E+3 Hz |
| Impedance | 20000 Ohm |
| Noise Control | None |

## Product Details

- **Brand:** ProTechTrader
- **Color:** (Beige - 3.5mm Headphone Jack)
- **Ear Placement:** In Ear
- **Form Factor:** In Ear
- **Impedance:** 20000 Ohms

## Images

![Piezo Electric Crystal Earphone Sensitive High Impedance Ceramic Ear Piece 3.5mm for Transistor Radio/Crystal Radios DIY Electronics Projects 1/8 inch Audio Jack Connector Wire Piezoelectric Element - Image 1](https://m.media-amazon.com/images/I/61p4ALaGBBL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Gets the job done
*by F***6 on December 22, 2017*

I use these for building crystal radios and they work perfectly. I just remove the auxiliary end then separate and strip the wires, and they are ready to go. I've used several of these earpieces and they always work just fine. The only thing is they are fragile, so you don't want to drop them..otherwise the plastic part that goes in your ear pops right off. I've used a small 3d printed plastic cap to replace one piece that has broken off before, and it still worked good as new. Would recommend!

### ⭐ Sound comes and goes at will
*by P***. on December 21, 2024*

I don't like the earphones: the sounds cuts in and out randomly; the ear piece doesn't stay in my ear at all.

### ⭐⭐⭐⭐⭐ comfortable
*by K***R on June 6, 2024*

Good quality

## Frequently Bought Together

- Piezo Electric Crystal Earphone Sensitive High Impedance Ceramic Ear Piece 3.5mm for Transistor Radio/Crystal Radios DIY Electronics Projects 1/8 inch Audio Jack Connector Wire Piezoelectric Element
- 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
- BNTECHGO 28 AWG Magnet Wire - Enameled Copper Wire - Enameled Magnet Winding Wire - 4 oz - 0.0122" Diameter 1 Spool Coil Red Temperature Rating 155℃ Widely Used for Transformers Inductors

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**Shop now:** [https://www.desertcart.lk/products/38312547-piezo-electric-crystal-earphone-sensitive-high-impedance-ceramic-ear-piece](https://www.desertcart.lk/products/38312547-piezo-electric-crystal-earphone-sensitive-high-impedance-ceramic-ear-piece)

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*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-03-18*