How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want earbuds that adapt the sound to your own hearing through a companion app, choose MEE audio EarBoost EB1; if you need a Bluetooth transmitter/receiver that adds aptX Adaptive to older TVs, airplane jacks and car stereos, choose Erewll 5.4.
• MEE audio EarBoost EB1 — biggest strength: app-driven adaptive audio enhancement that tailors sound to your hearing curve, with earfins and three eartip sizes for a secure in-ear fit.
• MEE audio EarBoost EB1 — biggest trade-off: Bluetooth-only playback with no noise cancelling, Micro-USB charging, and a sound experience that depends on you actually using the app.
• Erewll 5.4 — biggest strength: Qualcomm Bluetooth 5.4 with aptX Adaptive and aptX Low Latency, working both as a transmitter and a receiver for legacy audio gear.
• Erewll 5.4 — biggest trade-off: it is an adapter, not a listening device — it has no drivers of its own, so it only helps if you already own wired-source gear and separate headphones.
• Pick the MEE audio EarBoost EB1 if you want better-sounding earbuds for your phone.
• Pick the Erewll 5.4 if you want to make an old TV, airplane seat or wired speaker work with modern Bluetooth headphones.
The EarBoost EB1 is an in-ear Bluetooth earphone built around one idea: personalization. MEE audio's iOS/Android companion app lets you tailor the sound to your unique hearing curve, and the company's pitch is that this restores missing detail and boosts clarity. Whether or not your ears are "average," the practical effect of that design is that the tuning is not fixed at the factory — it moves toward what you can actually hear. The hardware backs it up as a listening product: a dynamic driver, Bluetooth wireless with roughly 10 meters of range, and media controls, with a 2-hour charge time.
Physically, this is a workout-and-commute-friendly shape. You get three sizes of eartips plus flexible earfins, which is the combination that keeps an earbud locked in during movement rather than slowly working loose. There's a protective carrying case in the box, a Micro-USB charging cable, and a 1-year manufacturer's warranty. The enclosure is plastic in a gunmetal finish, and the whole thing weighs about 14.2 g — light enough that the fit, not the weight, is what you'll notice.
Erewll 5.4: Who It's For
The Erewll 5.4 is a different category of product entirely, and that's the most important thing to understand before comparing the two. It's a Bluetooth transmitter and receiver — a small adapter, not headphones. Its job is to take audio from a source that has no Bluetooth (a non-smart TV, a PC, a tablet, gym equipment, a car stereo, a wired home audio setup) or from an airplane seat's 3.5 mm jack, and send it wirelessly to the headphones or earbuds you already own.
The headlining feature is the Qualcomm Bluetooth 5.4 chipset with aptX Adaptive and aptX Low Latency. In practice that means stable, high-quality sound and smoother audio/video synchronization — the two things that ruin movie and gaming sessions over Bluetooth. It runs in both directions: TX mode for TVs and airplanes, RX mode for car audio and home audio, and it supports two listeners at once so two people can share one source, effectively acting as a Bluetooth audio splitter. Range is listed at 15 meters, wider than the earbuds above.
It's built for travel and living-room duty. A dual 3.5 mm airplane adapter fits both single and dual airline jacks, and a 3.5 mm audio adapter is included. Built-in cable storage keeps the kit tidy in a bag, there's one multi-function button for pairing and resetting, and an LED logo indicator shows status at a glance. Battery life is the standout number: 20+ hours per charge, recharging in about 1.5 hours over USB-C. It's also certified to FCC, CE, RoHS and BQB standards and includes over-current, short-circuit and over-temperature protection. Note it is not water resistant and it's a tabletop-mount item at 2.8" x 1.2" x 0.6", 90 g in white polycarbonate.
Who should buy it: frequent flyers, owners of older TVs, and anyone with good wired or Bluetooth headphones who wants them to work everywhere. Who should skip it: anyone looking for earbuds. If you don't already own headphones to pair it with, this product does nothing for you.
• Best for personalizing sound to your hearing → MEE audio EarBoost EB1. The companion app and hearing-curve tailoring are unique to it.
• Best for turning old gear Bluetooth → Erewll 5.4. Transmitter and receiver modes cover TVs, PCs, cars and home audio.
• Best for flights → Erewll 5.4. The dual 3.5 mm airplane adapter is made for single and dual airline jacks.
• Best for movies and gaming sync → Erewll 5.4. aptX Adaptive and aptX Low Latency target exactly that A/V lag problem.
• Best for battery life → Erewll 5.4. 20+ hours per charge versus a 2-hour charge time on the earbuds (MEE audio doesn't publish a runtime figure on this sheet).
• Best for gym and movement → MEE audio EarBoost EB1. Earfins plus three eartip sizes are built to stay put.
• Best for two people sharing one screen → Erewll 5.4. It supports two headphones or earbuds at once.
• Best if you want fewer devices → MEE audio EarBoost EB1. It's a complete listening product; the Erewll is an add-on that needs headphones you already own.
These two barely compete — they solve different problems, so the honest answer is that "which is better" depends on what's broken in your setup. If your complaint is that your earbuds sound flat or won't stay in, I'd buy the MEE audio EarBoost EB1: the hearing-curve app, earfins and three eartip sizes are a complete solution out of the box, and you give up noise cancelling and USB-C to get it. If your complaint is that your TV, car or airplane seat can't talk to your headphones, I'd buy the Erewll 5.4: aptX Adaptive, dual pairing, 20+ hours and an airplane adapter make it the more capable tool for that job. In my opinion, the Erewll is the more versatile purchase for most households — but only if you already own headphones worth pairing it with.
FAQ
The app is what delivers the adaptive audio enhancement — tailoring sound to your hearing curve, restoring detail and boosting clarity. The earphones connect over Bluetooth and have media controls, but skipping the app means skipping the feature that defines the model. If you won't install it, this isn't the right pick.
Yes. In receiver (RX) mode it takes a Bluetooth signal and outputs through AUX or RCA, and in transmitter (TX) mode it sends audio from a wired source to Bluetooth headphones. It also supports two listeners at once. It has no drivers of its own, so a separate pair of headphones is required.
The Erewll is rated at 20+ hours per charge with roughly 1.5 hours of USB-C charging. MEE audio lists a 2-hour charge time for the EarBoost EB1 but no runtime figure on its spec sheet, so a direct comparison isn't possible from the data. For long flights, the Erewll's published figure is the safer bet.
As an Amazon Associate I earn from qualifying purchases.
We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon and affiliated sites.
When you buy through links on this page, we may earn a commission from qualifying purchases at no extra cost to you.
Amazon and the Amazon logo are trademarks of Amazon or its affiliates. This site is an independent third-party review and is not affiliated with, endorsed by, or sponsored by Amazon or the product brands mentioned.
See also: audio Technica ATH-G1 vs EarFun Air Pro 4: APTX Adaptive, Beeitzie Airplane vs Avantree Relay: APTX Adaptive, MEE audio KidJamz KJ55 vs L LTGEM Headphone Case Compatible