--- product_id: 434770059 title: "Avantree Quartet-Extra - 2.4G RF Wireless Add-On Headphones Quartet Multiple Listening System, Scalable to 100" brand: "avantree" price: "6353729₫" currency: VND in_stock: true reviews_count: 5 category: "Avantree" url: https://www.desertcart.vn/products/434770059-avantree-quartet-extra-2-4g-rf-wireless-add-on-headphones store_origin: VN region: Vietnam --- # Lightweight memory foam comfort 2.4G RF tech, ultra-low latency ~30ms 20-hour extended battery life Avantree Quartet-Extra - 2.4G RF Wireless Add-On Headphones Quartet Multiple Listening System, Scalable to 100 **Brand:** avantree **Price:** 6353729₫ **Availability:** ✅ In Stock ## Summary > 🎬 Experience the future of group audio—crystal clear, lag-free, and made for sharing! ## Quick Answers - **What is this?** Avantree Quartet-Extra - 2.4G RF Wireless Add-On Headphones Quartet Multiple Listening System, Scalable to 100 by avantree - **How much does it cost?** 6353729₫ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/434770059-avantree-quartet-extra-2-4g-rf-wireless-add-on-headphones) ## Best For - avantree enthusiasts ## Why This Product - Trusted avantree brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Marathon Battery Life:** Up to 20 hours of uninterrupted playtime for your longest movie nights or concerts - • **All-Day Comfort Design:** Ergonomic, lightweight with soft memory foam earpads for pressure-free wear - • **Seamless Group Listening:** Scale up to 100 headphones for epic silent events without disturbing anyone - • **Lag-Free Audio Experience:** 2.4G RF tech slashes audio delay to ~30ms—way faster than Bluetooth - • **Personalized Sound Control:** Built-in individual volume knobs let everyone tune in their perfect level ## Overview The Quartet-Extra is a 2.4G RF wireless headphone add-on designed exclusively for the Avantree Quartet system, allowing up to 100 users to connect simultaneously. It delivers ultra-low latency audio (~30ms), superior sound quality, and individual volume control in a lightweight, memory foam-padded design. With up to 20 hours of battery life, it’s perfect for extended movie or concert sessions without disturbing neighbors. ## Description Avantree Q5049-RX, an Add-on RF Wireless Headphones for [Avantree Q5049 Wireless TV Headphones Pack] (Sold Separately), Up to 100 Devices, Individual Volume Controls, 2 EQ Modes, 20H Playtime Review: Faux contact s allume et s éteint constamment conséquence batterie déchargée - Déçue de mon deuxième écouteur acheté il déraille en ne sachant plus se déconnecter. Il tourne en boucle s allumant et s éteignant du coup la batterie toujours vide. Review: Perfect ## Features - [ONLY WORKS WITH QUARTET] This single pair of 2.4G wireless headphones is an add-on for the Avantree Quartet bundle (sold separately). Add up to 100 of these headphones to the Quartet bundle and enjoy an outdoor movie or silent concert without disturbing the neighbors. - [LESS DELAYS, BETTER QUALITY] The Quartet-Extra headphones feature 2.4G technology and NOT Bluetooth. This reduces the audio lag down to ~30ms -- significantly less than the 220ms of standard Bluetooth and even the 40ms of aptX Low Latency. This also improves overall sound quality due to 2.4G's higher bit rate & extended bandwidth. - [INDIVIDUAL VOLUME CONTROL] Each pair of wireless headphones are equipped with built-in individual volume controls, so everyone can listen at their own desired volume. - [LIGHTWEIGHT & COMFORTABLE] These headphones are ergonomically designed to be lightweight and flexible, featuring soft memory foam earpads and an adjustable headband. Enjoy all-day, pressure-free use. NOTE: Replaceable earpads are available for purchase. - [EXTENDED PLAYTIME] With a battery life of up to 20 hours, these headphones will last through your longest movie or concert sessions with time to spare. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09DKS353X | | Additional Features | Add on 2.4G RF wireless headphones for Avantree Q5049 Set,, No Lip-sync Delay, 2 EQ Modes for Clear Voice & Balanced Sound, Enhanced Volume, Individual Volume Controls, 20H Playtime | | Age Range Description | Adult | | Antenna Location | Movie or Concert Sessions | | Audio Driver Type | Dynamic Driver | | Audio Latency | 30 Milliseconds | | Battery Average Life | 20 Hours | | Battery Charge Time | 2 Hours | | Best Sellers Rank | #91,764 in Electronics ( See Top 100 in Electronics ) #1,699 in Over-Ear Headphones | | Brand | Avantree | | Built-In Media | Carry bag, 3.5mm jack | | Cable Features | Retractable | | Carrying Case Color | Black | | Carrying Case Material | Faux Leather | | Color | Black or Gray | | Colour | Black or Gray | | Compatible Devices | Avantree Q5049 Wireless TV Headphones Pack, Avantree Quartet, Avantree Audiplex, Avantree Duet | | Connectivity Technology | Wireless | | Control Method | Remote | | Control Type | Volume Control | | Controller Type | wireless volume controller | | Customer Reviews | 4.3 out of 5 stars 48 Reviews | | Ear placement | Over Ear | | Earpiece Shape | Over-ear | | Enclosure Material | memory foam | | Form factor | Over Ear | | Frequency Range | 20 Hz - 20,000 Hz | | Frequency Response | 20000 Hz | | Headphone Folding Features | Over Ear | | Headphone Jack | 3.5 mm Jack | | Headphones Ear Placement | Over Ear | | Impedance | 32 Ohms | | Is Autographed | No | | Item Type Name | an Add-on RF Wireless Headphones for Avantree Q5049 | | Item Weight | 220 Grams | | Manufacturer | Avantree | | Model Name | WSHT-5049-RX | | Model Number | WSHT-5049-RX | | Noise Control | None | | Noise control | None | | Number of Items | 1 | | Number of Power Levels | 5 | | Specific Uses For Product | Home Entertainment | | Style Name | Single Headphones | | Subject Character | no character | | Theme | Movie | | Warranty Description | Warranty - 12 months (extend to 24 months with product registration) | Email - support@avantree.com | Video user guide FAQ and registration - support.avantree.com | | Water Resistance Level | Not Water Resistant | | Wireless Technology | RF | ## Product Details - **Brand:** Avantree - **Colour:** Black - **Ear placement:** Over Ear - **Form factor:** Over Ear - **Impedance:** 32 Ohms ## Images ![Avantree Quartet-Extra - 2.4G RF Wireless Add-On Headphones Quartet Multiple Listening System, Scalable to 100 - Image 1](https://m.media-amazon.com/images/I/61CF7f0RcWL.jpg) ![Avantree Quartet-Extra - 2.4G RF Wireless Add-On Headphones Quartet Multiple Listening System, Scalable to 100 - Image 2](https://m.media-amazon.com/images/I/61QZRSp5IuL.jpg) ![Avantree Quartet-Extra - 2.4G RF Wireless Add-On Headphones Quartet Multiple Listening System, Scalable to 100 - Image 3](https://m.media-amazon.com/images/I/51L76wolESL.jpg) ![Avantree Quartet-Extra - 2.4G RF Wireless Add-On Headphones Quartet Multiple Listening System, Scalable to 100 - Image 4](https://m.media-amazon.com/images/I/51zR6jKpkKL.jpg) ![Avantree Quartet-Extra - 2.4G RF Wireless Add-On Headphones Quartet Multiple Listening System, Scalable to 100 - Image 5](https://m.media-amazon.com/images/I/51+ZjmMerZL.jpg) ## Questions & Answers **Q: what cleaning products can i use to clean the headphones?** A: These are the cleaning products we recommend for use on our headphones. Disinfecting Wipes https://www.amazon.com/dp/B08BKR9YT6 You can also get washable headphone covers for easy cleaning. https://www.amazon.com/dp/B07BP4PCVY ## Customer Reviews ### ⭐⭐ Faux contact s allume et s éteint constamment conséquence batterie déchargée *by F***O on 25 August 2025* Déçue de mon deuxième écouteur acheté il déraille en ne sachant plus se déconnecter. Il tourne en boucle s allumant et s éteignant du coup la batterie toujours vide. ### ⭐⭐⭐⭐⭐ Perfect *by D***T on 1 November 2024* ### ⭐ Nicht zufriedenstellend *by R***S on 19 October 2024* Die Klangfarbe der Kopfhörer ist blechernd und kaum steuerbar. Die zwei Modi Klang- und Aspekteunterstützung der Tonübertragung reichen nicht aus. Für kurzzeitige Präsentationen vielleicht geeignet, aber für längere Tragezeiten unangenehm. ## Frequently Bought Together - Avantree Quartet-Extra - 2.4G RF Wireless Add-On Headphones Quartet Multiple Listening System, Scalable to 100 - Avantree Quartet - 4 Wireless Headphones & 1 Transmitter for Multiple Group Listening Scalable to 100 with No Lip-Sync Delays for TV Watching, Silent Discos, Hearing Assistance in Church, and More - Avantree [Super Stable] Neetto Dual Headphones Stand for Desk, Aluminum Alloy & Metal Gaming Headsets Holder Hanger for Sennheiser, Sony, Audio-Technica, Bose, Beats, Akg, Display Mount - HS908 --- ## 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.vn/products/434770059-avantree-quartet-extra-2-4g-rf-wireless-add-on-headphones](https://www.desertcart.vn/products/434770059-avantree-quartet-extra-2-4g-rf-wireless-add-on-headphones) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-05-16*