---
product_id: 67513049
title: "Piezoelectric Crystal Earphone 20K Ohm Bare Wire Leads for Crystal Radio"
brand: "protechtrader"
price: "₨473"
currency: SCR
in_stock: true
category: "Pro Tech Trader"
url: https://www.desertcart.sc/products/67513049-piezoelectric-crystal-earphone-20k-ohm-bare-wire-leads-for-crystal
store_origin: SC
region: Seychelles
---

# Passive piezoelectric driver 20KΩ ultra-high impedance 42-inch bare wire leads Piezoelectric Crystal Earphone 20K Ohm Bare Wire Leads for Crystal Radio

**Brand:** protechtrader
**Price:** ₨473
**Availability:** ✅ In Stock

## Summary

> 🎧 Unlock vintage vibes with modern DIY precision!

## Quick Answers

- **What is this?** Piezoelectric Crystal Earphone 20K Ohm Bare Wire Leads for Crystal Radio by protechtrader
- **How much does it cost?** ₨473 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/products/67513049-piezoelectric-crystal-earphone-20k-ohm-bare-wire-leads-for-crystal)

## 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

- • **Compact Ceramic Comfort:** Lightweight, in-ear ceramic earpiece ensures discreet, noise-isolating listening for focused project work.
- • **Plug-and-Solder Freedom:** 42-inch tinned bare wire leads offer flexible, direct solder or terminal connections—perfect for custom DIY setups.
- • **Battery-Free Sound Magic:** Passive piezoelectric technology converts weak signals into crisp audio without any external power source.
- • **Precision Signal Tracing:** Ideal for electronics pros needing reliable audio feedback during circuit diagnostics and radio repairs.
- • **Crystal-Clear Vintage Audio:** Experience authentic sound with a 20,000-ohm impedance designed for crystal radios and transistor restorations.

## Overview

The ProTechTrader CH905 Piezoelectric Crystal Earphone features a high-impedance 20K-ohm ceramic driver with 42-inch bare wire leads, enabling battery-free audio playback for crystal radios, transistor restorations, and signal tracing. Designed for professional DIY electronics enthusiasts, it delivers clear, passive sound isolation in a lightweight, solder-ready form factor.

## Description

desertcart.com: Piezoelectric Crystal Earphone 20K Ohm Bare Wire Leads for Crystal Radio : Sports & Outdoors

## Features

- Use this ProTechTrader CH905 piezoelectric crystal earphone with a high-impedance crystal radio receiver. Two tinned bare leads connect the single ceramic earpiece to a solder point or terminal.
- The passive element turns weak audio signals into sound without a battery or external amplifier. Use the earpiece for crystal set listening, transistor radio restoration, or signal tracing.
- A 42-inch twisted cable gives you room at the bench and suits soldered or terminal connections. Compare the 20K-ohm rating with the required load before connecting it.
- The package contains one beige earpiece without a 3.5mm plug or adapter. Supply the radio, project parts, and any extra connection hardware.
- Choose this wired earphone for DIY electronics when a standard low-impedance headphone loads the circuit. Check your receiver design, terminal method, and available cable path before installation.

## 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 | #332,235 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #297 in Lab ESD Supplies |
| 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 | 4.6 4.6 out of 5 stars (220) |
| Earpiece Shape | in-ear |
| Enclosure Material | ceramic |
| Headphone Folding Features | In Ear |
| Headphone Jack | 3.5 mm Jack |
| Headphones Ear Placement | In Ear |
| Impedance | 20000 ohm |
| Item Weight | 6.26 g |
| Manufacturer | ProTechTrader |
| Model Name | Piezo-bare |
| Model Number | Piezo-bare |
| Noise Control | Sound Isolation |
| Number of Items | 1 |
| Specific Uses For Product | DIY Electronics Projects |
| UPC | 789048342869 |
| Unit Count | 1 Count |
| Warranty Description | 1 Year |
| Water Resistance Level | Not Water Resistant |
| 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 Crystal Earphone 20K Ohm Bare Wire Leads for Crystal Radio - Image 1](https://m.media-amazon.com/images/I/61TseA8aIQL.jpg)

## Available Options

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

## Frequently Bought Together

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**Shop now:** [https://www.desertcart.sc/products/67513049-piezoelectric-crystal-earphone-20k-ohm-bare-wire-leads-for-crystal](https://www.desertcart.sc/products/67513049-piezoelectric-crystal-earphone-20k-ohm-bare-wire-leads-for-crystal)

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*Product available on Desertcart Seychelles*
*Store origin: SC*
*Last updated: 2026-09-25*