---
product_id: 422748152
title: "Piezoelectric Crystal Earphone Bare Wire (Upgraded Brass)"
brand: "protechtrader"
price: "A$33"
currency: AUD
in_stock: null
url: https://www.desertcart.com.au/products/422748152-piezoelectric-crystal-earphone-bare-wire-upgraded-brass
store_origin: AU
region: Australia
---

# 20,000Ω high impedance All soldered wire connections Brass diaphragm upgrade Piezoelectric Crystal Earphone Bare Wire (Upgraded Brass)

**Brand:** protechtrader
**Price:** A$33
**Availability:** ❌ Out of Stock

## Summary

> 🎙️ Upgrade your radio game with ProTechTrader’s precision piezo power!

## Quick Answers

- **What is this?** Piezoelectric Crystal Earphone Bare Wire (Upgraded Brass) by protechtrader
- **How much does it cost?** A$33 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/422748152-piezoelectric-crystal-earphone-bare-wire-upgraded-brass)

## 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

- • **Pro-Level Impedance:** High 20,000 ohm impedance delivers superior performance for crystal and transistor radios.
- • **Classic Meets Modern:** Retro beige design with a highly sensitive molded earpiece for authentic vintage vibes.
- • **Plug & Play DIY Ready:** 42-inch twisted black wire with pre-tinned bare leads makes integration effortless.
- • **Unmatched Reliability:** All soldered connections ensure zero connectivity issues—built to last in your DIY projects.
- • **Precision Audio Clarity:** Experience crystal-clear sound with a 57dB sensitivity tuned for 200-8,000Hz frequencies.

## Overview

The ProTechTrader Piezoelectric Ear Phone is a 2022 upgraded model featuring a brass diaphragm and all soldered wire connections for enhanced durability and reliability. With a high impedance of 20,000 ohms and 57dB sensitivity across 200-8,000Hz, it’s optimized for crystal and transistor radio projects. Its retro design and pre-tinned leads make it the go-to choice for serious DIY electronics enthusiasts.

## Description

Full description not available

## Features

- Newly Designed Updated Model for 2022 - Featuring a Brass Diaphragm and All Soldered Wire Connections
- Redesigned to eliminate connectivity issues and increase reliability allowing you to make electronics projects like Crystal or Transistor Radios without concern for issues plaguing lower quality models
- 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
- New Black Wire Upgraded Piezoelectric Earphone with Classic style highly sensitive molded earpiece and 42-in twisted wire with pre-tinned bare wire connections

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Headphone Folding Features | In Ear |
| Earpiece Shape | Rounded Tip |
| Headphones Ear Placement | In Ear |
| Is Electric | No |
| Antenna Location | DIY Electronics Projects |
| Compatible Devices | Earphone |
| Cable Features | Retractable |
| Additional Features | All Soldered Connections, Black wire with bare pre-tinned leads, Brass Diaphram |
| Specific Uses For Product | DIY Electronics and Radio Building |
| Style Name | Retro |
| Color | Beige |
| Connectivity Technology | Wired |
| Frequency Range | 200 to 8,000 Hz |
| Audio Driver Type | Piezoelectric Driver |
| Frequency Response | 8E+3 Hz |
| Impedance | 2E+4 Ohm |
| Noise Control | None |

## Product Details

- **Brand:** ProTechTrader
- **Color:** Beige
- **Ear Placement:** In Ear
- **Form Factor:** In Ear
- **Impedance:** 20000 Ohms

## Images

![Piezoelectric Crystal Earphone Bare Wire (Upgraded Brass) - Image 1](https://m.media-amazon.com/images/I/51rVQMARP1L.jpg)

## Available Options

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

## Frequently Bought Together

- Piezoelectric Ear Phone High Impedance Ceramic Piezo Ear Piece for Crystal Radios - Upgraded Brass Diaphram with All Soldered Connections
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**Shop now:** [https://www.desertcart.com.au/products/422748152-piezoelectric-crystal-earphone-bare-wire-upgraded-brass](https://www.desertcart.com.au/products/422748152-piezoelectric-crystal-earphone-bare-wire-upgraded-brass)

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-03-05*