{"product_id":"avantree-ht3831-rx-add-on-2-4g-rf-wireless-earphone-single-rx","title":"Avantree HT3831-RX Add-On 2.4G RF Wireless Earphone - Single RX","description":"\u003cp\u003eIn this review the focus is on the Avantree HT3831-RX add-on single earphone, intended for owners of the Avantree HT3831 or HT381 transmitter bundles who want to expand listening to additional users. The bottom line: this is a straightforward, senior-friendly 2.4G RF earbud that delivers low-latency TV audio and easy setup when paired with the correct transmitter. It is not a standalone product; buyers must already own an HT3831 or HT381 base, and this review concentrates on real-world use, comfort, and the features that matter when adding more listeners.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Works only with the HT3831 or HT381 transmitter, ensuring private protocol pairing and zero added lip-sync delay for TV listening.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSenior-friendly design:\u003c\/strong\u003e The earbud is louder than average and shaped for easy handling, making it easier for seniors and users with limited mobility to use without complex setup.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePre-paired convenience:\u003c\/strong\u003e The earbud ships pre-paired to the transmitter, so adding it typically requires only powering the unit and placing it in range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndependent volume:\u003c\/strong\u003e Each earbud pair allows volume adjustment without changing other users' levels, providing personalized listening for multiple viewers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmbient Mode:\u003c\/strong\u003e Built-in microphones enable Ambient Mode so environmental sounds are passed through without removing the earbud, improving situational awareness while watching TV.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScalable system:\u003c\/strong\u003e You can add up to 100 HT3831 earbuds to a single transmitter for large households or shared spaces without introducing latency.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe HT3831-RX add-on is best for households that already own an Avantree HT3831 or HT381 bundle and need to add a single user or a few extra listeners. It is particularly well suited to seniors, caregivers, or anyone who benefits from louder output and simple plug-and-play setup.\u003c\/p\u003e\n\u003cp\u003eThis is not for users seeking a standalone Bluetooth earbud, a charging dock, or those who need cross-brand compatibility; the earbud only functions with HT3831\/HT381 transmitters using Avantree's private protocol. If you want wireless earbuds for phone calls or mobile device pairing, look elsewhere.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLow-latency 2.4G RF connection with the compatible transmitter, eliminating lip-sync issues for TV viewing.\u003c\/li\u003e\n\u003cli\u003eSenior-friendly volume and form factor that simplifies use for older adults.\u003c\/li\u003e\n\u003cli\u003eIndependent volume and left-right balance let each listener tailor their audio.\u003c\/li\u003e\n\u003cli\u003eAmbient Mode provides situational awareness without removing the earbud.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOnly compatible with HT3831\/HT381 transmitters, so it cannot be used standalone or with other brands.\u003c\/li\u003e\n\u003cli\u003eNo charging dock included with this single RX unit, so buyers must manage charging separately or already own a dock from the bundle.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct type\u003c\/td\u003e\n\u003ctd\u003e2.4G RF wireless add-on earphone (single)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible transmitters\u003c\/td\u003e\n\u003ctd\u003eAvantree HT3831 and HT381 (batch T23J1 and later)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eScalability\u003c\/td\u003e\n\u003ctd\u003eUp to 100 HT3831 earbuds per transmitter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume control\u003c\/td\u003e\n\u003ctd\u003eIndependent volume per earbud plus left-right balance adjustment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAmbient Mode\u003c\/td\u003e\n\u003ctd\u003eYes, built-in microphones to pass through environment sound\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharging dock\u003c\/td\u003e\n\u003ctd\u003eNot included with this single earphone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Avantree HT3831-RX single add-on earphone is a practical, cost-effective way to expand a compatible HT3831 or HT381 system for additional viewers, especially seniors. Its low-latency 2.4G RF link, pre-paired convenience, and independent volume control make it a sensible buy if you already have the required transmitter; however, it is not a standalone solution and does not include a charging dock.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCan this earphone work by itself without the transmitter?\u003c\/strong\u003e\u003cbr\u003eNo. This RX earphone only functions when paired with an Avantree HT3831 or HT381 transmitter and will not operate as a standalone Bluetooth earbud.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow many earphones can be connected to one transmitter?\u003c\/strong\u003e\u003cbr\u003eYou can pair and connect up to 100 HT3831 earbuds to a single compatible transmitter with no added latency.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs a charging dock included?\u003c\/strong\u003e\u003cbr\u003eNo. This listing is for a single earphone only and does not include a charging dock; a dock is included with the base HT3831\/HT381 bundles.\u003c\/p\u003e","brand":"Avantree","offers":[{"title":"Default Title","offer_id":46754329002203,"sku":"B0DHZJF4SN","price":68.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/411QbJUuZoL._AC_SL1024.jpg?v=1747817570","url":"https:\/\/gearmusthave.com\/products\/avantree-ht3831-rx-add-on-2-4g-rf-wireless-earphone-single-rx","provider":"GearMustHave","version":"1.0","type":"link"}