Avantree Relay – Airplane Bluetooth 5.3 Adapter with Qualcomm aptX Adaptive

What is it and what problem does it solve

The Avantree Relay is a compact Bluetooth 5.3 transmitter designed to connect directly to an aircraft’s in‑flight entertainment system via the standard 3.5 mm AUX jack. In practice, it turns a wired airline experience into a wireless one, freeing you from the airline’s headphones and the tangle of cables. If you’ve ever found the on‑board headphones unsuitable for your ear shape or simply cumbersome to manage during a long flight, this device offers a straightforward way to enjoy personal audio without swapping devices or fighting for a spare socket.

How it works and what to expect

This adapter is positioned as a wireless bridge for in‑flight use, not a general Bluetooth hub. It pairs with up to two Bluetooth headphones or AirPods at the same time, which makes it handy for couples or travel companions who want to share the same entertainment. The pairing is limited to audio transmission from the aircraft system, the Relay is not intended to connect to phones, tablets, or other playback sources. Practically, it acts as a dedicated transmitter, focusing on a stable, in‑air experience rather than a universal Bluetooth receiver.

Why it stands out on paper

Powered by Qualcomm aptX Adaptive, the Relay aims to deliver a balanced, low‑latency, reliable wireless audio signal for air travel. The goal here is to minimise the typical issues of wireless air travel audio—latency, dropouts, and degraded sound—so you can watch or listen without constant adjustment. The ability to support two separate headphones simultaneously is a genuine convenience for shared seats, allowing both travellers to enjoy the same content with their own devices.

Strengths worth noting

• Direct connection to the aircraft’s 3.5 mm AUX outlet, avoiding airline headphones.
• Dual‑device pairing means you can share the experience with a companion.
• Qualcomm aptX Adaptive is designed to balance sound quality with a robust wireless link.
• Long playback life, advertised up to 25 hours on a single charge, which is particularly appealing for longer flights.

Limitations and caveats

• It is a dedicated transmitter, it does not pair with mobile phones or tablets as a source. If you want to stream from a phone, you’d still need a separate source device.
• Not compatible with televisions or hearing aids, so its use is restricted to airline inflight entertainment setups.
• Sound quality and stability can still depend on the aircraft’s wireless interference and your headphone impedance, aptX Adaptive helps, but no outcome is guaranteed in every flight environment.
• As a travel accessory, it adds another gadget to manage in‑flight, it requires a bit of setup before takeoff.

Who it’s for

This is a sensible option if you frequently fly long distances and travel with at least one Bluetooth headset or AirPods. It suits travellers who prioritise a cable‑free experience and want the flexibility to watch with a companion without sharing a single airline handset. If your goal is to connect a phone or tablet directly to your headset on a flight, this isn’t the right tool for that job.

Who it isn’t the best for

If you mainly fly with devices that already have reliable wireless audio built‑in, or if you expect to connect to non‑aircraft sources, you may want to look for a more versatile transmitter/receiver. For those who require compatibility with televisions or assistive listening devices, this adapter won’t meet those needs. It’s also not ideal for users who prioritise ultra‑low latency gaming over cinema audio—aptX Adaptive helps, but there are limits in a busy aircraft RF environment.

When it makes sense to buy

If you value a cleaner wireless experience on planes, want to pair two headsets for shared viewing, and don’t need to connect to a phone or tablet during flight, the Relay offers a practical route to reducing on‑board clutter and improving comfort. The long battery life is a plus for frequent flyers and those on multi‑hour journeys.

Before you buy: what to check

• Ensure your aircraft entertainment system uses a standard 3.5 mm AUX output for best compatibility.
• Double‑check that you’re comfortable with the Relay acting strictly as a transmitter rather than a passive receiver.
• Consider the fit and type of your headphones, some wireless headphones with specific impedance profiles may perform differently depending on the source device and RF conditions.

Practical use: a typical scenario

On a red‑eye flight, you plug the Avantree Relay into the plane’s AUX port, pair two wireless headphones, and settle in for a movie night without any cables draping over the seat. You’ll notice that you can watch with a neighbour without borrowing their headphones, and the sound can stay solid even as the cabin shifts through different channels of RF activity during takeoff and cruising.

FAQ (practical answers drawn from available data)

• Can I use the Relay to listen with my AirPods? Yes, you can pair two Bluetooth headphones or AirPods at the same time.
• Is it a two‑way device? It is a transmitter only, it does not pair with phones or tablets as a source.
• What’s the battery life? Up to 25 hours of playback on a full charge.

Final decision

Is it worth it?

Worth considering if you travel frequently and want a simple, cable‑free way to use the inflight entertainment with two headphones. It’s particularly sensible for pairs who don’t want to fight for airline sockets or deal with wired headphones. If you prioritise using a phone or tablet as your source, or require compatibility with televisions or hearing aids, this may not be the best fit. In short, a practical bet for in‑flight audio simplification, with caveats about its role as a dedicated transmitter.