How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want a wired, in-ear monitor with a five-driver setup built for detail and deep bass on the move, choose LEAUDIO 7HZ; if you need wireless, on-ear headphones with up to 50 hours of battery for jogging and all-day wear, choose Beats Solo 4. These two sit in completely different corners of the headphone world, and for jogging specifically, that gap matters more than any spec sheet number.
• LEAUDIO 7HZ biggest strength: Five custom 6mm dynamic drivers per side, each in its own acoustic chamber, with an electronic crossover — a genuinely unusual design aimed at clarity and separation.
• LEAUDIO 7HZ biggest trade-off: It's a wired 3.5mm in-ear with a detachable 2-pin cable. No Bluetooth, no battery, no active features — your phone or player has to have a headphone jack or an adapter.
• Beats Solo 4 biggest strength: Wireless on-ear design with up to 50 hours of battery life, Fast Fuel quick charging, and lossless audio over USB-C or a 3.5mm cable.
• Beats Solo 4 biggest trade-off: It's an on-ear headphone, not an in-ear. On-ear cups can feel warm and can shift during hard movement, and there's no water or sweat resistance listed.
• Who LEAUDIO 7HZ is for: listeners who want a wired, high-detail in-ear and don't mind carrying a cable.
• Who Beats Solo 4 is for: anyone who wants cable-free convenience, long battery, and a lightweight on-ear fit for commuting, working, or casual jogging.
The LEAUDIO 7HZ FIVE is a wired in-ear headphone, and its whole identity is built around one idea: five dynamic drivers per side. That's the headline. Most multi-driver earphones lean on balanced armature drivers, and 7Hz has gone the other way, putting five custom 6mm dynamic drivers in each earpiece, each one sitting in its own acoustic chamber. The point of that layout is that every driver actually contributes instead of just adding to a marketing count.
On paper, the supporting hardware backs up the ambition. There's a precision electronic crossover using imported components to hand off low, mid, and high frequencies between drivers, a silver-plated oxygen-free copper cable with four strands of 49 wires each (196 wires total), a 0.78mm 2-pin detachable connection, a 3.5mm plug, a 12Ω impedance, 105dB sensitivity, and a frequency response stretching from 5Hz to 40,000Hz. The sound is described as solid, thunderous low end with a robust midrange and smooth highs that don't fatigue — the kind of tuning that suits long listening sessions rather than a quick burst.
Who should buy it? Someone who already owns a wired source — a DAP, a laptop with a headphone jack, a phone with an adapter — and wants an in-ear that prioritizes driver engineering and detail over wireless convenience. If you like the idea of an open, spacious, speaker-like presentation in a tiny shell, this is squarely aimed at you. The detachable cable is a real plus too, since a damaged cable is replaceable without retiring the earphones, and there's a one-year warranty.
Who should skip it? Anyone whose priority is cable-free movement. There's no Bluetooth here, so these are not the bluetooth earbuds for jogging you'd grab for a run with nothing but a phone in your pocket. A cable bouncing around while you move is a genuine annoyance, and there's no mention of sweat or water resistance. If you want to run unencumbered, this isn't the tool.
The Beats Solo 4 is a wireless on-ear Bluetooth headphone, and it plays a completely different game. Where the 7HZ is about driver count and wired purity, the Solo 4 is about living with you all day. The headline number is battery: up to 50 hours of playback, with Fast Fuel giving you up to 5 hours from a quick 10-minute charge. For anyone who has ever stared at a dead pair of headphones before a workout, that's the feature that actually changes behavior — charge anxiety basically disappears.
The design side is thoughtful too. It's an ultralight ergonomic build with a flex-grip headband and ergonomically angled, adjustable ear cups for a stable fit, plus UltraPlush ear cushions built for comfort and durability. At roughly 1.12 pounds for the package, it's a light on-ear that's meant to be worn for hours, not minutes. Sound comes from a custom acoustic architecture with updated drivers for that powerful, balanced Beats signature, and you get Personalized Spatial Audio with dynamic head tracking — a genuinely nice touch for movies and immersive listening.
There's also flexibility in how you listen. Lossless audio is available over USB-C or a 3.5mm audio cable, so you're not locked into Bluetooth quality when you want the best the headphone can do. It works with both Apple and Android. Charging takes about 2 hours, and it runs on a single lithium-ion battery.
Who should buy it? Commuters, students, office workers, and casual joggers who want wireless freedom, long battery, and a comfortable on-ear fit. If you want bluetooth headphones for jogging that you can put on, walk out the door, and forget about, this fits the brief far better than a wired in-ear. The 3.5mm and USB-C options also mean you can go wired when it suits you.
Side-by-Side: Which Should You Choose?
• Best for wireless freedom → Beats Solo 4. Bluetooth on-ear, no cable required.
• Best for battery life → Beats Solo 4. Up to 50 hours, plus up to 5 hours from a 10-minute charge.
• Best for wired sound quality and detail → LEAUDIO 7HZ. Five dynamic drivers per side with a dedicated crossover.
• Best for jogging → Beats Solo 4, in my opinion. Wireless movement beats a dangling cable for most runners.
• Best for replaceable parts → LEAUDIO 7HZ. The 0.78mm 2-pin cable detaches and can be swapped.
• Best for immersive movie and spatial audio → Beats Solo 4. Personalized Spatial Audio with dynamic head tracking.
• Best for extended casual listening without recharging → Beats Solo 4. The battery removes the daily charging ritual.
• Best for listeners who already own a wired player → LEAUDIO 7HZ. It slots straight into a 3.5mm jack.
For most people reading this, I'd buy the Beats Solo 4. If jogging is part of your routine, going wireless is the single biggest quality-of-life upgrade, and up to 50 hours of battery means you're never negotiating with a charging cable. In my opinion it's the more versatile pick for daily life.
That said, the LEAUDIO 7HZ is the more interesting piece of hardware, and if you already own a wired source and care about driver engineering, it's the one that will make you listen differently.
Is the LEAUDIO 7HZ wireless?
No. It's a wired in-ear with a 3.5mm plug and a detachable 0.78mm 2-pin cable. There's no Bluetooth and no battery, so it needs a device with a headphone jack or an adapter.
They can work for casual jogging thanks to their lightweight build, adjustable ear cups, and long battery. But they're on-ear, not in-ear, and no water or sweat resistance is listed, so heavy sweaters may prefer a different design.
They're tuned for different goals. The 7HZ uses five dynamic drivers per side with an electronic crossover for clarity and separation, while the Solo 4 uses custom acoustics for a powerful, balanced Beats sound with spatial audio. Which you prefer comes down to wired detail versus wireless immersion.
• Maeline Bulk Classroom Student vs Aechorhy Over Ear Kids
• JVC Gumy vs MLF Earbuds Noise Cancelling comparison
• INFURTURE USB C Headphones vs BNARQP Kids Headphones
• KZ Phantom vs CVJ Nozomi IEM: Gaming Earbuds
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.