---
product_id: 440722250
title: "Quartet-Extra - 2.4G RF Wireless Add-On Headphones Quartet Multiple Listening System, Scalable to 100"
brand: "avantree"
price: "570 zł"
currency: PLN
in_stock: true
reviews_count: 13
category: "Avantree"
url: https://www.desertcart.pl/products/440722250-quartet-extra-2-4g-rf-wireless-add-on-headphones-quartet
store_origin: PL
region: Poland
---

# Lightweight memory foam earpads, all-day comfort 2.4G RF wireless tech, ultra-low latency ~30ms 20-hour battery life for marathon sessions Quartet-Extra - 2.4G RF Wireless Add-On Headphones Quartet Multiple Listening System, Scalable to 100

**Brand:** avantree
**Price:** 570 zł
**Availability:** ✅ In Stock

## Summary

> 🎬 Elevate your group audio game—because silence is the new social.

## Quick Answers

- **What is this?** Quartet-Extra - 2.4G RF Wireless Add-On Headphones Quartet Multiple Listening System, Scalable to 100 by avantree
- **How much does it cost?** 570 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/440722250-quartet-extra-2-4g-rf-wireless-add-on-headphones-quartet)

## 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

- • **Comfort Meets Durability:** Ergonomic, flexible design with plush memory foam earpads ensures pressure-free wear all day long.
- • **Seamless Group Listening:** Scale up to 100 headphones for epic silent parties or outdoor cinema nights without disturbing anyone.
- • **Lag-Free Audio Experience:** 2.4G RF tech slashes audio delay to ~30ms, beating Bluetooth hands down for crystal-clear sync.
- • **Personalized Sound Control:** Built-in individual volume knobs let everyone tune in at their perfect level—no compromises.
- • **Endurance for the Long Haul:** Up to 20 hours of continuous playtime means your entertainment never has to pause.

## Overview

The Avantree Quartet-Extra is a 2.4G RF wireless add-on headphone designed exclusively for the Avantree Quartet system, enabling up to 100 users to enjoy synchronized, low-latency audio with superior sound quality. Featuring ultra-low ~30ms latency, individual volume controls, lightweight memory foam earpads, and a robust 20-hour battery life, these headphones deliver a premium, comfortable listening experience ideal for silent discos, outdoor movies, and group entertainment.

## Description

desertcart.com: Avantree Quartet-Extra - 2.4G RF Wireless Add-On Headphones Quartet Multiple Listening System, Scalable to 100 : Electronics

Review: Very little latency, good sound levels. - I am running 6 units off 1 transmitter in a mid sized church sanctuary. I have good coverage, good dynamic level, and negligible latency
Review: Sinls to silent party system - Added this to my theater audio now have 5 one for each family member

## 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 | Familiy movie, TV Watching |
| Audio Driver Type | Dynamic Driver |
| Audio Latency | 30 Milliseconds |
| Battery Average Life | 20 Hours |
| Battery Charge Time | 2 Hours |
| Best Sellers Rank | #66,127 in Electronics ( See Top 100 in Electronics ) #1,460 in Over-Ear Headphones |
| Brand Name | Avantree |
| Built-In Media | Cable, Headphones |
| Cable Features | Tangle Free |
| Color | Black |
| Compatible Devices | Most TVs with Optical / RCA / 3.5mm Aux |
| Connectivity Technology | 2.4G RF Wireless, Optical, RCA, 3.5mm AUX |
| Control Method | Remote |
| Control Type | Volume Control |
| Customer Reviews | 4.1 4.1 out of 5 stars (47) |
| Earpiece Shape | Over-ear |
| Enclosure Material | memory foam |
| 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 | Sound Isolation |
| Number of Items | 1 |
| Specific Uses For Product | Home Entertainment |
| Style Name | Single Headphones |
| Theme | Movie |
| Warranty Description | Warranty - 24 months (product registration to cover first 12m return shipment cost) | Extensive Support: Chat, Email, Phone, Online Clinic, Video Tutorials, FAQ and Registration - avantree.com/support |
| Water Resistance Level | Not Water Resistant |
| Wireless Technology | 2.4G RF Wireless |

## Product Details

- **Brand:** Avantree
- **Color:** Black
- **Ear Placement:** Over Ear
- **Form Factor:** Over Ear
- **Impedance:** 32 Ohms

## Images

![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)

## 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

### ⭐⭐⭐⭐⭐ Very little latency, good sound levels.
*by G***E on March 22, 2026*

I am running 6 units off 1 transmitter in a mid sized church sanctuary. I have good coverage, good dynamic level, and negligible latency

### ⭐⭐⭐⭐⭐ Sinls to silent party system
*by D***M on December 30, 2025*

Added this to my theater audio now have 5 one for each family member

### ⭐⭐⭐⭐⭐ Works great!
*by B***G on June 5, 2025*

They work great!

## 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
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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-04-23*