Avantree Relay – Airplane Bluetooth Adapter for 2 AirPods or Headphones
Product description
What it is and what it solves
Avantree Relay is a dedicated Bluetooth transmitter designed for airplane entertainment. It plugs into a standard 3.5 mm seatback jack or uses the included airline adapter on compatible aircraft to stream audio wirelessly to two headphones or AirPods. If you’re chasing hands-free listening during flights or workouts, Relay aims to simplify setup and keep your devices untethered from in-flight screens.

How it works and key tech bits
Powered by a Qualcomm chipset with aptX Adaptive and aptX HD support, Relay targets clear, stable wireless sound when paired with compatible headphones. It’s important to note that codec performance depends on your headphones, AirPods use their built-in Bluetooth codec, which may not leverage aptX HD. The transmitter is a one-way device (transmitter only) and does not pair with phones or tablets. Firmware upgrades promise ongoing improvements in compatibility and stability, so the device can stay current with evolving headphones.



Battery life and controls
With up to 25 hours of playtime, Relay is built for long-haul flights and extended gym sessions. On-device controls include volume buttons and a battery indicator, which helps you manage playback without pulling out your phone.

Who this is for and where it shines
This adapter targets travelers who want to watch movies or listen to audio from a seatback system without wrestling with wires. It’s also practical for gym use or any scenario where a wireless link to two headphones is helpful. If you frequently travel on planes with compatible jacks and don’t need a two-way connection (phones or TVs), Relay can simplify listening in transit.



Limitations and when it may fall short
Relay is not compatible with TVs, hearing aids, musical instruments, or real-time monitoring. It’s a dedicated transmitter that won’t pair with phones or tablets, so if you’re hoping to use it as a general Bluetooth bridge, it won’t fit that role. The performance of aptX features depends on headphone compatibility, and AirPods use their own standard codec, which may not exploit aptX nuances.

What to check before you buy
- Aircraft compatibility: confirm a 3.5 mm seatback jack or airplane adapter is available on your flights.
- Headphone compatibility: for best audio clarity, pair with devices that support aptX Adaptive or HD, note that AirPods rely on their default codec.
- Use case clarity: if your primary need is streaming from a TV or phone to headphones, Relay isn’t designed for that purpose.



Practical usage snapshot
Imagine boarding a long flight, settling in, and plugging Relay into the seatback jack. You quickly connect two Bluetooth headphones or AirPods, and the movie soundtrack plays wirelessly with minimal setup. The built-in volume controls let you adjust without reaching for your seat tablet, and you appreciate the long battery life when the airline power outlet isn’t available.
Final decision: Is it worth it?
Is it worth it? It makes sense if you travel frequently by air and want a reliable, upgradeable transmitter for dual-headphone listening without wires. Consider that it won’t replace a dedicated home Bluetooth link or TV connection, and check headphone compatibility to ensure you’ll actually benefit from aptX features.
Quick FAQ
- Can Relay pair with my phone? No, it’s a transmitter only and does not pair with phones or tablets.
- Will it work with AirPods? Yes, but expect them to use their default Bluetooth codec rather than aptX HD.
- How long does the battery last? Up to 25 hours of playtime on a single charge, depending on usage and connected headphones.
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