--- 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: "₨338" currency: SCR in_stock: true reviews_count: 13 category: "Pro Tech Trader" url: https://www.desertcart.sc/products/67513049-piezoelectric-earphone-high-impedance-ceramic-earpiece-bare-wire-leads-transistor store_origin: SC region: Seychelles --- # 57dB sensitivity @1kHz 20,000Ω high impedance 42-inch twisted 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:** ₨338 **Availability:** ✅ In Stock ## Summary > 🎙️ Build your sound legacy with every wire twist! ## 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?** ₨338 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-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:** All-soldered connections and brass diaphragm boost durability and reliability. - • **DIY Dream Essential:** Perfect for crystal and transistor radio kits, empowering your hands-on creativity. - • **Bare Wire Flexibility:** 42-inch twisted wire with pre-tinned leads for seamless custom wiring and integration. - • **Crystal Clear Sensitivity:** 57dB rated sensitivity ensures crisp sound reproduction from 200Hz to 8kHz. - • **Vintage Vibes, Modern Precision:** Classic piezoelectric driver with 20kΩ impedance for authentic DIY audio projects. ## Overview This Piezoelectric Crystal Earphone features a high 20,000 ohm impedance and 57dB sensitivity, delivering vintage-style audio clarity ideal for DIY electronics projects like crystal and transistor radios. Its durable brass diaphragm and all-soldered connections ensure long-lasting performance, while the 42-inch twisted bare wire leads offer flexible integration for custom builds. ## Description Product description Piezoelectric Crystal Earphone with Bare Wire Connections Ceramic earphone/Crystal earpiece for Transistor and Crystal Radios, Sensitive Electronics Projects, Lab research and other DIY experiments requiring a very sensitive high impedance earpiece. Piezoelectric earphones also known as crystal earphones, ceramic earphone, and piezo earpieces are the most sensitive earphones. They are in fact many times more sensitive than even the most sensitive magnetic earphones, dynamic earphones, or electrostatic earphones that you may use on your smartphone. Sensitive earphones have a very high impedance, which is measured in ohms and should not be used directly with a modern amplified radio. Crystal Earphones are so sensitive and require so little power to operate that you can hear a small 'click' just by touching the two bare leads together. Crystal radios will not work with modern earphones or 'earbuds' as they are designed to operate with amplified audio sources found in today's electronic devices. Crystal Earphones are used in the construction of the crystal radio and in some science experiments such as listening to electric fish. Specifications Impedance: 20K ohm Resistance: 20M ohm Capacitance: 15,000 pf Sensitivity: 57db at 1KHz Frequency Range: 200 - 8,000Hz Operation Temperature: -20 to 60 degree Celsius Wire: 42-inch Molded twisted Wire Connector: Tinned Leads for DIY Connections About This Item 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 Updated Model Available Featuring All Soldered Connections/ Brass Diaphragm for Increased and life. ProTechTrader We are a small family business from New Jersey. Our ProTechTrader mission is two-fold: teach and provide. We are dedicated to teaching the basics of electronics hobbyists through resources and service. As a small private business, we pride ourselves on service that is personal and tailored to your specific needs. We are also dedicated to providing the sort of electronic components that are not always easily available. ## 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 | #36,981 in Electronics ( See Top 100 in Electronics ) #2,015 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 | 4.6 out of 5 stars 217 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 Ohms ## 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 ### ⭐⭐⭐⭐⭐ Review *by C***0 on April 13, 2021* ### ⭐⭐⭐⭐⭐ Review *by P***N on March 29, 2026* ### ⭐⭐⭐⭐⭐ Review *by A***R on April 23, 2026* ## Frequently Bought Together - 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 - BOJACK 1N34A Germanium Diode 50 mA 65V Axial 1N34A 50 millimap 65 volt Electronic Diodes (Pack of 25) - 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 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sc/products/67513049-piezoelectric-earphone-high-impedance-ceramic-earpiece-bare-wire-leads-transistor](https://www.desertcart.sc/products/67513049-piezoelectric-earphone-high-impedance-ceramic-earpiece-bare-wire-leads-transistor) --- *Product available on Desertcart Seychelles* *Store origin: SC* *Last updated: 2026-05-03*