---
product_id: 422748152
title: "ProTechTrader Piezo Earphone Brass Diaphragm Crystal Radio High Impedance"
brand: "protechtrader"
price: "$22.50"
currency: USD
in_stock: true
category: "Pro Tech Trader"
url: https://www.desertcart.us/products/422748152-protechtrader-piezo-earphone-brass-diaphragm-crystal-radio-high-impedance
store_origin: US
region: United States of America
---

# Piezoelectric driver for precise audio response 20,000Ω ultra-high impedance Brass diaphragm for crystal-clear resonance ProTechTrader Piezo Earphone Brass Diaphragm Crystal Radio High Impedance

**Brand:** protechtrader
**Price:** $22.50
**Availability:** ✅ In Stock

## Summary

> 🎧 Elevate your DIY audio game with crystal-clear precision!

## Quick Answers

- **What is this?** ProTechTrader Piezo Earphone Brass Diaphragm Crystal Radio High Impedance by protechtrader
- **How much does it cost?** $22.50 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/422748152-protechtrader-piezo-earphone-brass-diaphragm-crystal-radio-high-impedance)

## 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

- • **Lightweight & Compact:** Only 0.01 kg—perfect for lab experiments and on-the-go tinkering
- • **Plug & Play Compatibility:** 3.5mm jack fits seamlessly with your custom projects
- • **Brass Diaphragm Excellence:** Durable metal design delivering crisp, resonant sound
- • **Precision Piezoelectric Driver:** Experience crystal radio clarity with advanced piezo tech
- • **Ultra-High Impedance (20,000Ω):** Optimized for sensitive DIY electronics and crystal radios

## Overview

The ProTechTrader Piezo Earphone features a high-impedance 20,000Ω piezoelectric driver paired with a durable brass diaphragm, delivering precise audio ideal for crystal radios and sensitive electronics projects. Lightweight and wired with a 3.5mm jack, it’s designed for professional DIY enthusiasts seeking superior sound clarity in their experiments and builds.

## Description

desertcart.com: ProTechTrader Piezo Earphone Brass Diaphragm Crystal Radio High Impedance : Electronics

## Features

- piezoelectric ear phone high impedance
- piezo electric crystal earphone
- electronics for men
- diy crystal radio
- electronics

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09MZML96L |
| Additional Features | All Soldered Connections, Black wire with bare pre-tinned leads, Brass Diaphram |
| Age Range Description | Adult |
| Antenna Location | DIY Electronics Projects |
| Audio Driver Type | Piezoelectric Driver |
| Best Sellers Rank | #340 in Two-Way Radio Headsets & Microphones |
| Brand Name | ProTechTrader |
| Built-In Media | Earphone only |
| Cable Features | Without Cable |
| Color | Beige |
| Compatible Devices | DIY Electronics Kits, Crystal Radios, Transistor Sensitive Projects, Lab research, experiments |
| Connectivity Technology | Wired |
| Control Method | Remote |
| Customer Reviews | 4.4 4.4 out of 5 stars (73) |
| Earpiece Shape | Rounded Tip |
| Enclosure Material | Metal |
| Frequency Range | 200 to 8,000 Hz |
| Frequency Response | 8000 hertz |
| Headphone Folding Features | In Ear |
| Headphone Jack | 3.5 mm Jack |
| Headphones Ear Placement | In Ear |
| Impedance | 20000 ohm |
| Item Weight | 0.01 kg |
| Manufacturer | ProTechTrader |
| Model Name | Piezo-Brass-Black-Bare |
| Model Number | Piezo-Brass-Black-Bare |
| Noise Control | None |
| Number of Items | 1 |
| Sensitivity | 57 db |
| Specific Uses For Product | DIY Electronics and Radio Building |
| Style Name | Brass Black Wire |
| UPC | 789048343323 |
| Unit Count | 1 Count |
| Warranty Description | 90 Days |
| Water Resistance Level | Not Water Resistant |

## Product Details

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

## Images

![ProTechTrader Piezo Earphone Brass Diaphragm Crystal Radio High Impedance - Image 1](https://m.media-amazon.com/images/I/51rVQMARP1L.jpg)
![ProTechTrader Piezo Earphone Brass Diaphragm Crystal Radio High Impedance - Image 2](https://m.media-amazon.com/images/I/512qNDWQpJL.jpg)
![ProTechTrader Piezo Earphone Brass Diaphragm Crystal Radio High Impedance - Image 3](https://m.media-amazon.com/images/I/51x2YtPcF7L.jpg)
![ProTechTrader Piezo Earphone Brass Diaphragm Crystal Radio High Impedance - Image 4](https://m.media-amazon.com/images/I/61-fiSTq90L.jpg)
![ProTechTrader Piezo Earphone Brass Diaphragm Crystal Radio High Impedance - Image 5](https://m.media-amazon.com/images/I/51kbhPz8GOL.jpg)

## Available Options

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

## Frequently Bought Together

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**Shop now:** [https://www.desertcart.us/products/422748152-protechtrader-piezo-earphone-brass-diaphragm-crystal-radio-high-impedance](https://www.desertcart.us/products/422748152-protechtrader-piezo-earphone-brass-diaphragm-crystal-radio-high-impedance)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-08-04*