--- product_id: 422748152 title: "Piezoelectric Crystal Earphone Bare Wire (Upgraded Brass)" brand: "protechtrader" price: "SAR 57" currency: SAR in_stock: true category: "Pro Tech Trader" url: https://www.desertcart.com.sa/products/422748152-piezoelectric-crystal-earphone-bare-wire-upgraded-brass store_origin: SA region: Saudi Arabia --- # 20,000Ω high impedance No battery or amplifier needed 42-inch pre-tinned bare wire leads Piezoelectric Crystal Earphone Bare Wire (Upgraded Brass) **Brand:** protechtrader **Price:** SAR 57 **Availability:** ✅ In Stock ## Summary > 🎙️ Hear the Future of Vintage Tech Today! ## Quick Answers - **What is this?** Piezoelectric Crystal Earphone Bare Wire (Upgraded Brass) by protechtrader - **How much does it cost?** SAR 57 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.sa](https://www.desertcart.com.sa/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 - • **Durable Brass Diaphragm:** Upgraded brass diaphragm delivers reliable, long-lasting sound quality over typical tin alternatives. - • **Plug-and-Play Simplicity:** Operates effortlessly without batteries or external amplifiers—just connect and listen. - • **Extended Reach with Long Leads:** 42-inch twisted black cable with pre-tinned bare wires offers flexible, easy integration into any DIY project. - • **Perfect for Makers & Tinkerers:** Ideal for crystal radios, transistor restorations, lab demos, and signal tracing—engineered for the hands-on professional. - • **Crystal-Clear Signal Preservation:** 20,000Ω impedance ensures your delicate crystal radio signals stay pure without signal drain. ## Overview The ProTechTrader High Impedance Crystal Earphone is a premium piezoelectric earpiece designed specifically for crystal radios and sensitive audio circuits. Featuring a 20,000-ohm impedance, it preserves weak signals without external power, while its brass diaphragm and soldered connections ensure durability and superior sound clarity. With a 42-inch pre-tinned lead cable, it offers versatile connectivity for DIY electronics, radio restoration, and lab experiments—making it the go-to choice for millennial makers who demand both performance and reliability. ## Description desertcart.com: High Impedance Crystal Earphone for Crystal Radio, Piezoelectric Earpiece : Sports & Outdoors ## Features - This high-impedance piezoelectric earphone connects to crystal radios and other circuits with weak audio output. Use this high impedance crystal radio earphone where a standard earpiece loads the signal too heavily. - Its 20,000-ohm impedance works with passive crystal radio signals without requiring a battery or separate amplifier. The ceramic element responds to the receiver's small audio signal. - A 42-inch twisted black lead ends in two pre-tinned bare wires for soldering or terminal connections. The long cable leaves room to position the earpiece at the bench. - Use the single earpiece for crystal radio builds, transistor radio restoration, lab demonstrations, and signal tracing. Use the bare leads in radio projects or connect them to screw terminals and breadboard jumpers. - One beige earphone comes with two bare wire ends. Add a plug or terminals if your circuit needs them; the radio receiver isn't included. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09MZML96L | | Additional Features | All Soldered Connections, Black wire with bare pre-tinned leads, Brass Diaphram | | Age Range Description | Adult | | Audio Driver Type | Piezoelectric Driver | | Best Sellers Rank | #545 in Two-Way Radio Headsets & Microphones | | Brand | ProTechTrader | | Brand Name | ProTechTrader | | Built-In Media | Earphone only | | Cable Features | Retractable | | Color | Beige | | Compatible Devices | DIY Electronics Kits, Crystal Radios, Transistor Sensitive Projects, Lab research, experiments | | Connectivity Technology | Wired | | Control Method | Remote | | Customer Reviews | 4.5 out of 5 stars 78 Reviews | | Ear Placement | In Ear | | Earpiece Shape | Rounded Tip | | Form Factor | In Ear | | Frequency Response | 8000 hertz | | Generation | 1st Generation | | Hardware Interface | USB | | Headphone Folding Features | In Ear | | Headphone Jack | 3.5 mm Jack | | Headphones Ear Placement | In Ear | | Impedance | 20000 ohm | | Input-Device Interface | Audio jack | | Item Weight | 0.01 kg | | Manufacturer | ProTechTrader | | Mfr Part Number | Piezo-Brass-Black-Bare | | Model Name | Piezo-Brass-Black-Bare | | Model Number | Piezo-Brass-Black-Bare | | Noise Control | None | | Number of Items | 1 | | Number of Packs | 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 ![Piezoelectric Crystal Earphone Bare Wire (Upgraded Brass) - Image 1](https://m.media-amazon.com/images/I/51rVQMARP1L.jpg) ![Piezoelectric Crystal Earphone Bare Wire (Upgraded Brass) - Image 2](https://m.media-amazon.com/images/I/512qNDWQpJL.jpg) ![Piezoelectric Crystal Earphone Bare Wire (Upgraded Brass) - Image 3](https://m.media-amazon.com/images/I/51x2YtPcF7L.jpg) ![Piezoelectric Crystal Earphone Bare Wire (Upgraded Brass) - Image 4](https://m.media-amazon.com/images/I/61-fiSTq90L.jpg) ![Piezoelectric Crystal Earphone Bare Wire (Upgraded Brass) - 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 - Piezoelectric Ear Phone High Impedance Ceramic Piezo Ear Piece for Crystal Radios - Upgraded Brass Diaphram with All Soldered Connections - 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 - BOJACK 1N34A Germanium Diode 50 mA 65V Axial 1N34A 50 millimap 65 Volt Electronic Diodes(Pack of 25 Pieces) --- ## 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.com.sa/products/422748152-piezoelectric-crystal-earphone-bare-wire-upgraded-brass](https://www.desertcart.com.sa/products/422748152-piezoelectric-crystal-earphone-bare-wire-upgraded-brass) --- *Product available on Desertcart Saudi Arabia* *Store origin: SA* *Last updated: 2026-10-30*