[
    {
        "role": "user",
        "content": "which%20sennheiser%20headphones%20support%20auracast"
    },
    {
        "role": "assistant",
        "content": "Here are some **Sennheiser / Sonova** headphones (and related gear) that *do* support Auracast, as well as those that are rumored or expected to get support. Auracast is part of Bluetooth LE Audio (LC3), creating broadcast-like capability \u2014 think: `[source -> multiple supported receivers]`. ([en.wikipedia.org](https://en.wikipedia.org/wiki/Auracast?utm_source=openai))\n\n---\n\n## Devices that *Already* Support Auracast\n\n| Device | What Users Should Know |\n|--------|--------------------------|\n| **RS 275 TV headphones (HDR 275 + BTA1 transmitter)** | These are built for Auracast from the ground up. The BTA1 transmitter uses Auracast exclusively to broadcast audio via the LC3 codec. It supports ultra-low latency and up to 50 meters of range. ([newsroom.sennheiser.com](https://newsroom.sennheiser.com/incredible-sound-for-any-size-screen?utm_source=openai)) |\n| **Momentum True Wireless 4** | These earbuds already support Auracast thanks to a firmware update. Using Sennheiser\u2019s Smart Control app (version 4.9.0+), users can access an \u201cAuracast assistant\u201d feature that lets them connect to broadcast streams. ([notebookcheck.net](https://www.notebookcheck.net/Sennheiser-introduces-new-Momentum-True-Wireless-4-ANC-earphones-with-Auracast-and-other-innovations.791979.0.html?utm_source=openai)) |\n| **Accentum True Wireless** | Similar to the Momentum True Wireless 4, Accentum True Wireless earbuds will\u2014or already have\u2014real Auracast support via that same firmware/app update. ([newsroom.sennheiser.com](https://newsroom.sennheiser.com/momentum-true-wireless-4-og-accentum-true-wireless-far-stotte-for-auracast?utm_source=openai)) |\n\n---\n\n## Devices Getting Auracast *Soon* / Very Likely\n\n| Device | Status & Notes |\n|--------|-----------------|\n| **Momentum Sport** | The \u201cFind My Device\u201d feature is arriving via firmware, and while the Auracast assistant was mentioned for the ear-buds in the Momentum line, it's not yet confirmed whether full Auracast broadcast support is active. ([newsroom.sennheiser.com](https://newsroom.sennheiser.com/momentum-true-wireless-4-og-accentum-true-wireless-far-stotte-for-auracast?utm_source=openai)) |\n| **RS 255 TV headphones** | The RS 255 bundle is closely related to the RS 275; both share compatibility features. The transmitter + HDR 275 models are the first to clearly support Auracast. RS 255 is typically the same headphones but sold without the stand; Sennheiser documentation affirms that the RS 255/275 series supports Auracast when using the Smart Control Plus app. ([cdn.sennheiser-hearing.com](https://cdn.sennheiser-hearing.com/product-documents/product-downloads/rs-255/faq_links/RS255_FAQ_A01_EN-1.pdf?utm_source=openai)) |\n\n---\n\n## Rumored / Unconfirmed Auracast Support\n\n| Device | What the Community Says |\n|--------|--------------------------|\n| **Momentum 5 Wireless** | Some users believe Momentum 5 features \u201cBluetooth LE Audio and native Auracast support.\u201d But reviews are mixed; many say Auracast is not fully functional or find no way to turn it on. ([reddit.com](https://www.reddit.com/r/sennheiser/comments/1tyx8d5/momentum_5_vs_rs275_for_tv_watching/?utm_source=openai)) |\n\n---\n\n## Key Notes to Be Aware Of\n\n- **Firmware & App Updates**: Even when devices are *capable*, you\u2019ll often need the latest firmware version plus Sennheiser\u2019s Smart Control or Smart Control Plus app (v4.9.0 or newer) to turn on or manage Auracast. ([newsroom.sennheiser.com](https://newsroom.sennheiser.com/momentum-true-wireless-4-og-accentum-true-wireless-far-stotte-for-auracast?utm_source=openai))  \n- **Transmitters**: Devices like the RS 275 include a dedicated transmitter (BTA1). That\u2019s what actually broadcasts via Auracast, so every device that tunes into the stream must be Auracast-compatible. ([newsroom.sennheiser.com](https://newsroom.sennheiser.com/incredible-sound-for-any-size-screen?utm_source=openai))  \n- **Codec**: Auracast uses the LC3 codec. Having LC3 is necessary but not sufficient\u2014device firmware and hardware must support broadcast mode. ([support.sennheiser-hearing.com](https://support.sennheiser-hearing.com/hc/en-gb/articles/34975025479453-How-does-Bluetooth-Audio-work?utm_source=openai))\n\n---\n\nIf you tell me a specific Sennheiser model you\u2019re interested in, I can check whether *that one* supports Auracast \u2014 that way you\u2019ll have a definite answer."
    }
]