--- product_id: 80401350 title: "NEXT GEEK 3.5mm Female to 6.5mm Male Headphone Audio Stereo Auxiliary Adapter Plug Converter Jack for Electric Guitar, Amplifier, Piano, Keyboard, etc" brand: "next geek" price: "€ 3.26" currency: EUR in_stock: false reviews_count: 8 url: https://www.desertcart.hr/products/80401350-next-geek-3-5mm-female-to-6-5mm-male-headphone store_origin: HR region: Croatia --- # 3.5mm female for versatile headphones 6.5mm male for pro instruments Durable TRS stereo connectors NEXT GEEK 3.5mm Female to 6.5mm Male Headphone Audio Stereo Auxiliary Adapter Plug Converter Jack for Electric Guitar, Amplifier, Piano, Keyboard, etc **Brand:** next geek **Price:** € 3.26 **Availability:** ❌ Out of Stock ## Summary > 🎶 Elevate your sound game—connect like a pro, anytime, anywhere! ## Quick Answers - **What is this?** NEXT GEEK 3.5mm Female to 6.5mm Male Headphone Audio Stereo Auxiliary Adapter Plug Converter Jack for Electric Guitar, Amplifier, Piano, Keyboard, etc by next geek - **How much does it cost?** € 3.26 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/80401350-next-geek-3-5mm-female-to-6-5mm-male-headphone) ## Best For - next geek enthusiasts ## Why This Product - Trusted next geek brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Robust Build Quality:** Reliable P-38/TRS connectors ensure stable, noise-free sound - • **Compact & Lightweight:** Only 20g and pocket-sized for on-the-go musicians and audiophiles - • **Plug & Play Simplicity:** No batteries or drivers needed—just connect and amplify your sound - • **Pro-Grade Compatibility:** Seamlessly connects 3.5mm headphones to 6.5mm professional audio gear - • **Universal Audio Adapter:** Works flawlessly with guitars, amplifiers, pianos, and more ## Overview The NEXT GEEK GTD-355 is a compact, lightweight 3.5mm female to 6.5mm male stereo audio adapter designed for professional and personal audio equipment. Compatible with electric guitars, amplifiers, headphones, and keyboards, it features durable P-38/TRS connectors for reliable, high-quality sound transmission without the need for batteries or drivers. ## Description Product Description Stereo Headphone Adapter 6.35 mm (1/ 4 inch) audio stereo plug to 3.5 mm (1/ 8 inch) stereo headphone jack adapter, designed to adapt a mini stereo phone plug to a stereo phone jack. Excellent Sound Experience The durable adapter ensures strong signal to keep sound clear, enjoying your music world without noise interference. Wide application: Headphone jack adapter can be applied to electric pianos, guitars and other instruments, mixers, specialist audios, speakers, microphones, phones, MP3 players, etc. Earphone adapter can be also applied to most pro audio and home audio equipment, such as amplifiers, mixing console, home theater devices, amplifiers or AV receivers. Good Quality Connectors Nickel-plated connectors of the headphone jack plug resist corrosion and oxidation, providing a much longer service life. Handy Design 360 Degree grip tread of the stereo audio adapter allow easy plugging and unplugging. About this item Can be use with microphones, electric guitars, headphones, loudspeakers, and many other items of audio equipment High quality P-38 / TRS stereo maTRS EP stereo female connector is used in many professional audio applications. P-38/TRS Connectors are simple to use, Reliable and provide cable protection. Connect your headphones that have a 1/8-inch audio jack, to a larger 1/4-inch jack to make it more versatile. Connect to 3.5mm earphones and headphones, and play the music in your MP3 Phones through amplifiers Review: Good quality - It's value for money. Compatible with 3.5mm jack Review: For your Keyboards and Synthesizers, - Does the job well. Value for Money. Scope for improvement in packaging. ## Features - Can be use with microphones, electric guitars, headphones, loudspeakers, and many other items of audio equipment - High quality P-38 / TRS stereo maTRS EP stereo female connector is used in many professional audio applications. - P-38/TRS Connectors are simple to use, Reliable and provide cable protection.; Connect your headphones that have a 1/8-inch audio jack, to a larger 1/4-inch jack to make it more versatile. - Connect to 3.5mm earphones and headphones, and play the music in your MP3 Phones through amplifiers - Warranty Type: Limited ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B078Y6WG5Q | | Best Sellers Rank | #165,845 in Electronics ( See Top 100 in Electronics ) #560 in Headphone Adapters | | Brand | NEXT GEEK | | Brand Name | NEXT GEEK | | Connector Type | Auxiliary | | Customer Reviews | 3.9 out of 5 stars 853 Reviews | | Item Dimensions | 17 x 15 x 2 Centimeters | | Item Package Quantity | 1 | | Item dimensions L x W x H | 17 x 15 x 2 Centimeters | | Manufacturer Part Number | AFG1110-145 | | Model Number | GTD-355 | | Number of Ports | 1 | | Power Plug Type | No Plug | | Specific Uses For Product | Microphone, Electric Guitar, Headphones, Loudspeakers, Amplifier, Piano, Keyboard, MP3 Phones, Amplifiers Specific Uses For Product Microphone, Electric Guitar, Headphones, Loudspeakers, Amplifier, Piano, Keyboard, MP3 Phones, Amplifiers See more | | Unit Count | 1.0 Count | ## Product Details - **Compatible Devices:** Amplifier, and many 6.3mm items of audio equipment, electric guitar, piano - **Specific Uses For Product:** Microphone, Electric Guitar, Headphones, Loudspeakers, Amplifier, Piano, Keyboard, MP3 Phones, Amplifiers - **Connector Type:** Auxiliary - **Colour:** Black - **Item dimensions L x W x H:** 17 x 15 x 2 Centimeters ## Images ![NEXT GEEK 3.5mm Female to 6.5mm Male Headphone Audio Stereo Auxiliary Adapter Plug Converter Jack for Electric Guitar, Amplifier, Piano, Keyboard, etc - Image 1](https://m.media-amazon.com/images/I/31UELEcifEL.jpg) ![NEXT GEEK 3.5mm Female to 6.5mm Male Headphone Audio Stereo Auxiliary Adapter Plug Converter Jack for Electric Guitar, Amplifier, Piano, Keyboard, etc - Image 2](https://m.media-amazon.com/images/I/511aZG6MhrL.jpg) ![NEXT GEEK 3.5mm Female to 6.5mm Male Headphone Audio Stereo Auxiliary Adapter Plug Converter Jack for Electric Guitar, Amplifier, Piano, Keyboard, etc - Image 3](https://m.media-amazon.com/images/I/61CQZ8DyF6L.jpg) ![NEXT GEEK 3.5mm Female to 6.5mm Male Headphone Audio Stereo Auxiliary Adapter Plug Converter Jack for Electric Guitar, Amplifier, Piano, Keyboard, etc - Image 4](https://m.media-amazon.com/images/I/415oePpAj7L.jpg) ![NEXT GEEK 3.5mm Female to 6.5mm Male Headphone Audio Stereo Auxiliary Adapter Plug Converter Jack for Electric Guitar, Amplifier, Piano, Keyboard, etc - Image 5](https://m.media-amazon.com/images/I/71041VkRMdL.jpg) ## Questions & Answers **Q: does it support in acoustic guitar?** A: It should **Q: Can i use this for my boat earset?** A: No **Q: Can iconnect it to ubon hp 1503headfone** A: If it's have either of the slot of 3.5 or 6.5 mm slot/hole then u can connect very well **Q: Can i use it for speaker** A: Yes for stereo confirguration only ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good quality *by A***J on 4 October 2023* It's value for money. Compatible with 3.5mm jack ### ⭐⭐⭐⭐⭐ For your Keyboards and Synthesizers, *by R***R on 8 September 2025* Does the job well. Value for Money. Scope for improvement in packaging. ### ⭐⭐⭐⭐ Usefulness and good quality *by S***N on 20 July 2025* Good product. Was useful in connecting my EarPods to the Keyboard ## Frequently Bought Together - NEXT GEEK 3.5mm Female to 6.5mm Male Headphone Audio Stereo Auxiliary Adapter Plug Converter Jack for Electric Guitar, Amplifier, Piano, Keyboard, etc - NEXT GEEK Gold Plated 3.5mm Female to 6.5mm Male Headphone Audio Stereo Adapter Plug Converter Jack for Electric Guitar, Amplifier, Piano, Keyboard, etc (Pack of 2) (2 Year Warranty) --- ## 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.hr/products/80401350-next-geek-3-5mm-female-to-6-5mm-male-headphone](https://www.desertcart.hr/products/80401350-next-geek-3-5mm-female-to-6-5mm-male-headphone) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-07-19*