If you want a versatile, high-fidelity Bluetooth transmitter for your home entertainment setup that supports the latest LE Audio standards and Auracast broadcasting, choose eppfun LE Audio; if you need a complete travel bundle with active noise cancellation specifically designed for flights and on-the-go listening, choose Avantree Relay.
• eppfun LE Audio: The biggest strength is its advanced QCC3086 chipset supporting AptX Lossless and Auracast for multi-device streaming with a 100-foot range; the trade-off is that it is strictly a transmitter unit requiring you to own compatible headphones separately. This pick is for the tech-savvy home user who wants to upgrade their TV or PC audio system without being tied to a single brand's earbuds.
• Avantree Relay: The biggest strength is the included Infinity NC earbuds with a six-microphone active noise cancelling system, making it a ready-to-use solution for noisy environments like airplanes; the trade-off is its shorter effective range and specific compatibility limits regarding TVs and assistive listening devices. This pick is for the frequent traveler or commuter who needs immediate noise isolation and wireless freedom without buying extra gear.
The eppfun LE Audio transmitter is built for the person who treats their living room media center as a serious audio experience. At its core, this device leverages the Qualcomm QCC3086 chipset, which is capable of handling high-resolution audio formats including AptX Lossless and AptX Adaptive. If you are an audiophile who cares about preserving the fidelity of music from your computer or television, this chip allows for 96kHz/24Bit transfer rates when paired with compatible receivers. Unlike older transmitters that might compress audio significantly to maintain connection stability, this unit prioritizes sound quality, ensuring that what you hear matches the source material closely.
What makes this option particularly compelling for modern setups is its support for LE Audio and Auracast technology. This isn't just about connecting one pair of headphones; it is about future-proofing your audio environment. You can broadcast audio signals to multiple terminals simultaneously, meaning you could stream content to several friends' devices in a group setting or connect to various compatible speakers around the house. The ability to manually switch between different encoding methods via buttons gives you direct control over how the audio is transmitted, allowing you to optimize for either maximum range or maximum quality depending on your current situation.
However, you must understand that this is a standalone transmitter. It does not come with earbuds or headphones in the box. To get the full benefit of the 100-foot wireless range and the low-latency performance, you need to pair it with your own existing wireless headphones that support the same codecs. This is the ideal scenario for someone who already owns a collection of high-quality ear clip headphones for pc or waterproof open ear earbuds for pc and simply needs a robust bridge to connect them to their TV, PS5, or computer. If you are looking for a plug-and-play all-in-one package where everything works together out of the box, this might feel incomplete to you initially, but it offers superior flexibility for expanding your home audio ecosystem later.
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-25 · 6 min read · Independent comparison
The Avantree Relay is designed for a very specific type of user: the traveler or the person who needs to block out chaos instantly. This product is sold as a complete bundle, pairing the Relay Bluetooth transmitter with the Avantalk Infinity NC earbuds. The defining feature here is the active noise cancellation (ANC) provided by the six-microphone system in the earbuds. When you are sitting on a plane, in a busy office, or walking through a noisy city, these microphones work together to reduce surrounding environmental noise. This creates an immersive listening environment that a standard passive earbud cannot achieve, making it the best choice for anyone who values silence and focus while on the move.
Connectivity-wise, the Relay transmitter is optimized for 3.5 mm audio sources, which includes the entertainment jacks found on most commercial airplanes. It supports aptX Adaptive, ensuring that even when transmitting over the often-challenging RF environment of an aircraft cabin, the audio remains synchronized and clear. The battery life of up to 25 hours on the transmitter is substantial enough for long-haul flights or extended trips without needing to recharge frequently. Furthermore, the earbuds themselves are versatile enough to connect to phones, PCs, and TVs, and they support Auracast broadcasts, so the utility extends well beyond just airplane use.
There are, however, limitations to consider if your primary goal is home theater expansion. The product documentation explicitly states that the Relay is not compatible with TVs, phones, assistive listening devices, musical instruments, or real-time monitoring systems in certain configurations. This restriction is a critical detail for anyone hoping to use this as a primary adapter for a living room setup. Additionally, while the range is decent, it is generally more suited for personal proximity rather than the 100-foot range offered by competitors designed for larger homes. If you need a reliable, all-in-one solution for travel that includes high-end noise cancellation, this bundle is unmatched, but it may lack the broad versatility required for a dedicated home audio hub.
• Best for high-fidelity home audio → eppfun LE Audio, thanks to the QCC3086 chip supporting AptX Lossless and 96kHz/24Bit transmission.
• Best for air travel and noise isolation → Avantree Relay, due to the included six-microphone ANC earbuds designed for flight environments.
• Best for multi-room broadcasting → eppfun LE Audio, which supports Auracast to connect unlimited terminals and share audio across devices.
• Best for immediate plug-and-play usage → Avantree Relay, as it comes with both the transmitter and the necessary earbuds in one package.
• Best for long-range freedom → eppfun LE Audio, offering a verified range of up to 100 feet for moving freely around a large space.
• Best value for travelers → Avantree Relay, providing two premium products (transmitter + ANC earbuds) in a single purchase.
• Best for PC and console gaming → eppfun LE Audio, with its low latency and support for optical, coaxial, and AUX inputs on gaming consoles like PS5.
• Best for users with existing headphones → eppfun LE Audio, allowing you to utilize your current favorite ear clip headphones for pc without replacing them.
I would buy the eppfun LE Audio for my personal home setup because I prioritize sound quality and the ability to integrate with my existing collection of ear clip headphones for pc. The support for Auracast and the high-resolution codec options make it a far superior choice for a stationary entertainment system where you want the absolute best audio fidelity possible. While the Avantree Relay is an excellent travel companion with its noise-canceling features, the eppfun unit offers the versatility and technical depth needed for a dedicated for pc and TV listening experience that will remain relevant as audio standards evolve.
Yes, the eppfun LE Audio supports low latency modes and connects directly to consoles like the PS5 via optical or coaxial inputs, whereas the Avantree Relay has noted incompatibilities with real-time monitoring and certain game-related audio streams.
Absolutely. The eppfun unit is a transmitter only; you must provide your own compatible wireless headphones or earbuds to receive the audio signal, unlike the Avantree Relay which includes the Infinity NC earbuds.
The eppfun LE Audio boasts a massive 50-hour battery life for the transmitter itself, compared to the 25-hour limit of the Avantree Relay, making the eppfun a stronger candidate for extended daily use at home.
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