--- product_id: 606407866 title: "Universal Bass Control Knob, 3.5m/11.48ft Bass Volume Knob with Extension Cable for Car Amplifier" brand: "ehophna" price: "$39.68" currency: USD in_stock: false reviews_count: 5 url: https://www.desertcart.us/products/606407866-universal-bass-control-knob-3-5m-11-48ft-bass-volume store_origin: US region: United States of America --- # 3-pin crystal connector for seamless plug & play 12.7ft extension cable for flexible placement Pure copper core cable with insulated PVC for durability Universal Bass Control Knob, 3.5m/11.48ft Bass Volume Knob with Extension Cable for Car Amplifier **Brand:** ehophna **Price:** $39.68 **Availability:** ❌ Out of Stock ## Summary > 🎵 Take command of your bass, wherever you drive! ## Quick Answers - **What is this?** Universal Bass Control Knob, 3.5m/11.48ft Bass Volume Knob with Extension Cable for Car Amplifier by ehophna - **How much does it cost?** $39.68 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/606407866-universal-bass-control-knob-3-5m-11-48ft-bass-volume) ## Best For - ehophna enthusiasts ## Why This Product - Trusted ehophna brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last:** High-quality copper core wiring wrapped in durable PVC insulation guarantees long-term performance and safety. - • **Plug & Play Simplicity:** 3-pin crystal connector ensures quick, hassle-free installation without any technical headaches. - • **Effortless Bass Mastery:** Fine-tune your subwoofer volume from the driver’s seat with a sleek, easy-to-reach knob. - • **Guaranteed Satisfaction:** Backed by a lifetime service promise—because your sound deserves nothing less. - • **Extended Reach, Ultimate Control:** 12.7 feet of premium cable lets you position the control exactly where you want it—no more awkward adjustments. ## Overview The EHOPHNA Universal Bass Control Knob features a 12.7-foot extension cable and a 3-pin crystal connector for easy installation and flexible placement. Designed to synchronize your car amplifier and subwoofer volume, it uses high-quality pure copper core wiring with insulated PVC for durability and safety. Lightweight and compact, this corded electric control knob offers precise bass adjustment from the driver’s seat, backed by a lifetime service guarantee. ## Description This amplifier bass volume control knob is specially designed to solve the problem of the car audio main control board and subwoofer volume out of sync, so that the music achieves the ultimate effect. Review: This is a quality bass control knob. I give this item 5 stars, it was super easy to install and dialed the bass in perfectly in our k5 Blazer show vehicle. I highly recommend it. Review: It says it's Universal, but it didn't work for me. Was very excited thinking it was going to work for me but it didn't. Definitely do your research and see if universal remotes will work with your subwoofer. ## Features - WORKS PERFECTLY - This amplifier bass volume control knob is specially designed to solve the problem of the car audio main control board and subwoofer volume out of sync, so that the music achieves the ultimate effect. - EXTENSION CABLE - The bass control knob connector cable is approximately 12.7 feet. It is usually installed in the free position of the driver to provide easier control of the volume. - EASY to INSTALL - the bass control knob is easy to install and use by plugging the 3-pin crystal connector into the sound interface of the subwoofer and the other end into the bass control knob. - HIGH QUALITY - This amplifier remote control knob adopts pure copper core cable design and high-quality insulated PVC protective wires. Which with power light to indicate the connection. - 100% QUALITY GUARANTEE - All of our products to give a lifetime of service. Any problems or needs, Please feel free to contact us. ## Technical Specifications | Specification | Value | |---------------|-------| | Brand | EHOPHNA | | Manufacturer | EHOPHNA | | Model | 1 | | Product Dimensions | 18.69 x 14.61 x 3.2 cm; 82 g | | Item model number | 1 | | Compatible Devices | Amplifier | | Special Features | Extended Cable Length | | Amplifier Type | Solid State | | Mounting Hardware | 1*Bass Control Knob | | Number of items | 1 | | Power Source | Corded Electric | | Batteries Included | No | | Batteries Required | No | | Type of cable or wire | 3-pin Male-to-Female | | Speaker Output Channel Quantity | 1 | | Connector Type | 3.5mm jack | | Material | Plastic | | Manufacturer | EHOPHNA | | Item Weight | 82 g | ## Product Details - **Brand:** EHOPHNA - **Colour:** Black - **Compatible Devices:** Amplifier - **Material:** Plastic - **Product Dimensions:** 18.7D x 14.6W x 3.2H Centimeters ## Images ![Universal Bass Control Knob, 3.5m/11.48ft Bass Volume Knob with Extension Cable for Car Amplifier - Image 1](https://m.media-amazon.com/images/I/41Y2QmcdHRL.jpg) ![Universal Bass Control Knob, 3.5m/11.48ft Bass Volume Knob with Extension Cable for Car Amplifier - Image 2](https://m.media-amazon.com/images/I/41aaXER1yUL.jpg) ![Universal Bass Control Knob, 3.5m/11.48ft Bass Volume Knob with Extension Cable for Car Amplifier - Image 3](https://m.media-amazon.com/images/I/511cw4Kz-NL.jpg) ![Universal Bass Control Knob, 3.5m/11.48ft Bass Volume Knob with Extension Cable for Car Amplifier - Image 4](https://m.media-amazon.com/images/I/51X+vGeeUdL.jpg) ![Universal Bass Control Knob, 3.5m/11.48ft Bass Volume Knob with Extension Cable for Car Amplifier - Image 5](https://m.media-amazon.com/images/I/51iKeF8A+hL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by J***H on 7 January 2026* This is a quality bass control knob. I give this item 5 stars, it was super easy to install and dialed the bass in perfectly in our k5 Blazer show vehicle. I highly recommend it. ### ⭐ Review *by N***E on 2 October 2025* It says it's Universal, but it didn't work for me. Was very excited thinking it was going to work for me but it didn't. Definitely do your research and see if universal remotes will work with your subwoofer. ### ⭐⭐⭐⭐⭐ Review *by D***T on 23 December 2025* Its exactly what I was needing. Worked perfect for my boss amp. Recommended ## Frequently Bought Together - Universal Bass Control Knob, 3.5m/11.48ft Bass Volume Knob with Extension Cable for Car Amplifier - BOSS Audio Systems KIT2 8 Gauge Complete Car Amplifier Installation Wiring Kit with Power Cables, Ground Cables, Turn-On Wire, Speaker Wire, Terminals - Kicker 46KISLOC2 K-Series Stereo Line-Output Converter w/Remote Turn-On Output --- ## 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.us/products/606407866-universal-bass-control-knob-3-5m-11-48ft-bass-volume](https://www.desertcart.us/products/606407866-universal-bass-control-knob-3-5m-11-48ft-bass-volume) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-16*