How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want a travel adapter that turns a plane's seat-back jack into a low-latency aptX HD stream for two pairs of headphones at once, choose Avantree Relay & SoundJet; if you need a single-ear headset for calls, driving and all-day office wear with a charging case that keeps you going, choose YIDUOKING Headset.
• Avantree Relay & SoundJet — biggest strength: aptX Adaptive and aptX HD over Bluetooth 5.3 via a premium Qualcomm chipset, plus the ability to pair two Bluetooth headphones simultaneously.
• Avantree Relay & SoundJet — biggest trade-off: it is a transmitter, not a headset. It plugs into a 3.5mm AUX jack, so it will not work with phones, car stereos or hearing aids.
• YIDUOKING Headset — biggest strength: a single-ear calling design with a noise-canceling mic, CVC 8.0 noise cancellation, IPX7 water resistance and a 500mAh charging case that extends talk time dramatically.
• YIDUOKING Headset — biggest trade-off: it is built for voice, not for shared listening. One ear, one wearer, and no dual-headphone streaming.
• Pick Avantree Relay & SoundJet if you fly often and want to share in-flight audio or use your own Bluetooth headphones on a wired system.
• Pick YIDUOKING Headset if you take a lot of calls, drive for work, or want a headset you can wear all day and charge from a case.
Avantree Relay & SoundJet is a Bluetooth audio transmitter built around a Qualcomm chipset and Bluetooth 5.3. Its job is specific: it takes audio from a 3.5mm AUX jack and sends it wirelessly to your Bluetooth headphones using aptX Adaptive and aptX HD. In plain terms, that means the audio you feed it stays low-latency and high-fidelity rather than getting chopped up or delayed, which matters most when you are watching something on a screen and lip-sync drift is obvious.
The standout feature is dual-headphone support. Two Bluetooth headphones can connect at the same time and stay synced, so two people can watch the same movie or listen to the same album from one source. Avantree also states up to 25 hours of continuous playback, LED indicators for connection status, and onboard buttons for pairing and volume. The whole thing is lightweight and pocket-sized, and it comes in black.
Who should buy it: frequent flyers, anyone who wants to use their own AirPods, Bose or other Bluetooth headphones with a wired in-flight entertainment system, and couples or travel partners who want to share audio. It also suits gym sessions where a machine or screen has a 3.5mm output. Avantree backs the design with 20 years of wireless experience, which is a reasonable signal of maturity in this niche.
Who should skip it: anyone hoping to use it with a phone, a car stereo or a hearing aid — Avantree explicitly says it is not compatible with those. And if you need a microphone for calls, this is not that product. It is a one-way audio transmitter, not a two-way headset.
YIDUOKING Headset is the opposite kind of device. It is a single-ear Bluetooth headset with a curved-hook, balanced ear-mounted design that is meant to sit comfortably for long stretches. The support point uses flexible, soft material, and the design spreads the weight across the ear, which is the kind of engineering you want if you plan to wear it through a full workday or a long drive. It is rated to fit both ears, and it ships with three ear tip sizes (S/M/L).
On the audio and calling side, it uses the QCC-3040 chip, supports aptX HD, and includes a noise-canceling microphone. You can answer and reject calls and mute directly from the headset, and it supports voice assistant access. YIDUOKING also lists CVC 8.0 noise cancellation and IPX7 waterproofing, which is a meaningful durability detail if you sweat, commute in the rain, or work outdoors. It pairs with two Bluetooth devices at once and uses Bluetooth 5.3 with a stated range of about 33 feet.
Battery is where it separates itself. The earpiece has a 55mAh battery that charges fully in 1.5 hours for up to 12 hours of continuous talking. Drop it into the 500mAh charging case and total talk time climbs to as much as 50 hours. The case measures 5 by 3.5 by 2 inches and weighs 2 ounces, so it is a bag item rather than a pocket item, and the headset itself weighs 1.2 ounces. Controls are button and touch based. It comes in grey with a black case, includes a USB-C cable, and carries a two-year warranty.
Who should buy it: drivers, delivery and sales professionals, remote workers who live on calls, and anyone who wants one ear free to hear the room. Who should skip it: people who want stereo music listening, shared audio, or a device that connects to a wired source.
• Best for aptX HD audio quality from a wired source → Avantree Relay & SoundJet, which uses aptX Adaptive and aptX HD over Bluetooth 5.3 with a Qualcomm chipset.
• Best for aptX HD on a headset you actually wear → YIDUOKING Headset, which supports aptX HD for low-latency transmission to your Bluetooth device.
• Best for battery life → YIDUOKING Headset, with up to 12 hours of talk time per charge and up to 50 hours total with the 500mAh case.
• Best for long single-session playback → Avantree Relay & SoundJet, rated for up to 25 hours of continuous playback.
• Best for sharing audio with a partner → Avantree Relay & SoundJet, the only one of the two that connects two Bluetooth headphones at once.
• Best for calls and hands-free work → YIDUOKING Headset, with its noise-canceling mic, mute control, voice assistant support and CVC 8.0 noise cancellation.
• Best for water and sweat resistance → YIDUOKING Headset, thanks to its IPX7 rating.
• Best for travel and flights → Avantree Relay & SoundJet, a pocket-sized 3.5mm AUX transmitter built for in-flight entertainment.
• Best value for a single buyer with mixed needs → In my opinion, the YIDUOKING Headset, because it covers calling, music and all-day wear from one device.
In my opinion, the YIDUOKING Headset is the better buy for most people, because it does more of what an everyday buyer actually needs: calls, hands-free control, a noise-canceling mic, IPX7 protection and a charging case that keeps it alive for days of talking. It is a complete, self-contained product.
The Avantree Relay & SoundJet is the better buy only if your problem is specific — you fly, the seat-back screen has a 3.5mm jack, and you want your own aptX HD headphones or you want to share the movie with someone next to you. In that exact scenario it is genuinely hard to beat, and nothing about the YIDUOKING headset solves it.
So: buy the Avantree if your use case is in-flight and shared audio. Buy the YIDUOKING if you want one device for calls and daily wear. Before you commit, check the current price on Amazon for both, since that is the one variable that can flip a close call.
which earbuds support aptx hd
Both products in this comparison support aptX HD, but in different ways. The Avantree Relay & SoundJet transmits aptX Adaptive and aptX HD from a 3.5mm AUX source to your Bluetooth headphones. The YIDUOKING Headset supports aptX HD for low-latency audio transmission to your Bluetooth device. Note that the Avantree is a transmitter, not an earbud itself.
what is the difference between a bluetooth transmitter and a bluetooth headset
A transmitter, like the Avantree Relay & SoundJet, takes audio from a wired source and sends it wirelessly — it has no speaker or microphone of its own, and Avantree states it is not compatible with phones, car stereos or hearing aids. A headset, like the YIDUOKING, is the endpoint you wear: it has a driver, a microphone and controls for calls.
does the yiduoking headset work with two devices at once
Yes. YIDUOKING states the headset can pair easily with two Bluetooth devices at once, using Bluetooth 5.3 with a range of about 33 feet. That is handy if you want to switch between a work laptop and a personal phone without re-pairing.
how long does the yiduoking headset battery last
YIDUOKING lists a 55mAh battery in the earpiece that charges fully in 1.5 hours and delivers up to 12 hours of continuous talking. With the 500mAh charging case, total talk time is stated as up to 50 hours. The product information section separately lists a 2-hour charge time, so expect roughly 1.5 to 2 hours depending on the charger.
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