✈️ Avantree Relay Review: The Premium Key to In-Flight Wireless Freedom
For modern travelers, the inconvenience of wired headphones on an airplane is a persistent annoyance. Most in-flight entertainment systems still rely on outdated 3.5mm or dual-prong audio jacks, forcing travelers to choose between using subpar airline-provided headsets or carrying an extra set of wired headphones.
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| Avantree Relay Review: The Premium Key to In-Flight Wireless Freedom |
The Avantree Relay Premium Airplane Bluetooth Adapter steps in to solve this problem, promising to unlock true wireless freedom for your favorite AirPods, Bose, Sony, or any other Bluetooth headphones, turning a clunky wired setup into a seamless, high-fidelity wireless experience. Equipped with an advanced Qualcomm chipset and the latest audio codecs, is the Avantree Relay truly the superior travel gadget it claims to be? Our in-depth review breaks down the performance, features, and overall value of this premium audio transmitter.
Key Specifications at a Glance
| Feature | Detail |
| Bluetooth Version | 5.3 |
| Audio Codecs | Qualcomm aptX Adaptive, aptX HD, aptX Low Latency, SBC |
| Dual-Headphone Support | Yes |
| Claimed Play Time | Up to 20-25 hours (Advertised 25hrs, common tests show 20+ hrs) |
| Input Connection | 3.5mm AUX (Single or Dual Prongs via included adapter) |
| Chipset | Advanced Qualcomm Chipset (often specified as CSR8675 in related models) |
| Charging | USB-C |
| In the Box | Relay Adapter, Dual 3.5mm Airplane Adapter, USB-C Charging Cable, Travel Pouch |
Design and Portability: Travel-Ready Excellence
The Avantree Relay is designed with the traveler in mind. It features a compact, sleek body that is easy to handle and clip onto a shirt, bag, or seat pocket, keeping the cable clutter to an absolute minimum.
A major plus is the universal compatibility provided by the included Dual 3.5mm Airplane Audio Adapter. This means whether your aircraft has a standard single 3.5mm jack or the older, common dual-prong setup, the Relay is ready to plug in. This small accessory eliminates the need for separate adapters, simplifying the packing process.
Avantree also includes a durable, zippered travel pouch. This is a small but crucial detail, as it prevents the adapter from getting scratched or the 3.5mm jack from bending when tossed into a carry-on bag alongside chargers and other gadgets.
The controls are intuitive, with a multi-function button for pairing and volume rockers on the side. LED indicators clearly show the connection status (for one or two headphones) and the battery level, making operation straightforward even in a dimly lit cabin.
Audio Performance: The Power of aptX Adaptive
This is where the Avantree Relay truly earns its "Premium" label. Most basic Bluetooth transmitters use the SBC codec, which often results in noticeable audio delay (latency) and lower sound quality. The Relay, however, leverages an Advanced Qualcomm Chipset to support a range of superior codecs, with aptX Adaptive being the star.
Low Latency and Synchronization
The most critical factor for enjoying movies and TV shows is latency—the delay between the video and the audio. When paired with compatible headphones (which support aptX Adaptive or aptX Low Latency), the Relay delivers near-perfect synchronization. This is a game-changer for watching in-flight entertainment (IFE). Gone are the distracting delays; the dialogue and action are perfectly in sync, offering an immersive viewing experience comparable to a wired connection.
High-Quality Audio
With support for aptX HD, the Relay can transmit high-resolution audio (where available from the IFE system), ensuring your premium noise-canceling headphones get the best possible signal quality. Even with the standard aptX Adaptive, the sound quality is crisp, detailed, and significantly better than what is typically achieved through basic transmitters or the airline’s supplied earphones.
Feature Highlights: Dual-Headphone Support and Long Battery
Simultaneous Dual Connection
A standout feature is the support for connecting two pairs of Bluetooth headphones simultaneously. This is ideal for couples or friends traveling together who want to share a movie on the same screen without being tethered together by wires. The connection process for the second device is simple and well-guided by the LED indicators. Crucially, the Relay maintains low-latency performance even with two connections active.
Exceptional Play Time
The advertised battery life of up to 25 hours (or a confirmed 20+ hours in real-world use) is more than enough to cover virtually any long-haul international flight, including those marathon trips spanning 15-20 hours. For added convenience, the device can be used while it is being charged via its modern USB-C port, ensuring you never miss the end of a movie if the power runs low.
Versatile Beyond the Plane
While positioned as an "Airplane Adapter," the Relay's functionality extends far beyond the cabin. It can easily connect to any device with a 3.5mm AUX audio out, including:
Gym equipment (treadmills, ellipticals)
Older home TVs
Handheld gaming consoles (like the Nintendo Switch)
This versatility makes it a valuable gadget that you will use long after your flight has landed.
Verdict: Is the Avantree Relay Worth the Premium Price?
The Avantree Relay lives up to its Premium moniker. It is not the cheapest airplane Bluetooth adapter on the market, but the slight price difference is entirely justified by its advanced technology and superior performance.
The combination of Bluetooth 5.3, the Qualcomm aptX Adaptive/Low Latency codecs, and the dual-headphone sharing feature sets it apart from more basic competitors. For travelers who invest in premium noise-canceling headphones (like Bose QC series or Sony WH-1000XM series) and demand perfectly synced, high-quality audio for their in-flight entertainment, the Relay is an essential piece of travel kit.
It successfully bridges the gap between old airplane technology and modern wireless audio, delivering a seamless, high-quality, and untethered media experience. If you are a frequent flyer, the Avantree Relay will quickly become one of your most valued travel companions.