If you want a rugged, wireless intercom headset that keeps your crew connected while leaving one ear open to the noise of a job site or gym environment, choose Solid Signal Eartec Ultralite PRO16-SR; if you need pristine, studio-grade audio fidelity for critical listening and mixing in a quiet space, choose Generic ATH-R70X.
• Solid Signal Eartec Ultralite PRO16-SR: Best for keeping two separate groups talking hands-free with 10 hours of battery life, but requires an existing PRO16 system to function.
• Generic ATH-R70X: Delivers ultra-wide frequency response and a lightweight aluminum build for audiophile accuracy, but is wired only and leaks sound due to its open-back design.
• Who this is for: The Eartec fits security crews, production teams, and active users needing situational awareness; the ATH-R70X suits engineers, musicians, and listeners who demand absolute sonic clarity in a controlled room.
The Eartec Ultralite PRO16-SR is not a standalone entertainment device; it is a specialized tool designed for communication. This single-ear remote add-on headset is built specifically to expand an existing PRO16 wireless intercom system. If you are already part of a team using these systems—whether on a film set, a construction site, or even a large-scale event—you can bring your crew count up to sixteen users without needing a base station or hub. It pairs directly with your current setup, allowing you to maintain full-duplex, hands-free conversation instantly.
What makes this unit distinct is its open-ear design. By leaving one ear completely free, it allows you to hear the world around you—the roar of an engine, the wind, alarms, or the ambient noise of a busy gym floor—while staying plugged into your team. This situational awareness is critical for safety and coordination. The boom microphone rotates to your preferred side and features an automatic mute function when flipped up, ensuring you control when you speak without fumbling with buttons.
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-30 · 6 min read · Independent comparison
The battery life is a standout feature for anyone working long shifts. You get ten hours of continuous use on a single charge, which covers a full workday without interruption. When the power does run low, the LX950Li battery pops out by hand, requiring no tools or service. You simply swap in a charged unit, and the headset is back in action immediately. However, you must know that this is strictly an add-on component. It will not connect to other systems like the UltraLITE Classic or HD, nor does it work as a starter kit. If you do not already own a PRO16 Main headset and at least one other Remote, this purchase will be useless to you.
In stark contrast, the Generic ATH-R70X is a high-fidelity reference headphone designed for the quiet precision of professional audio environments. It is an open-back model, meaning it is engineered to provide a natural, spacious soundstage that mimics listening to speakers in a room rather than inside a sealed box. This design choice is what allows it to capture every detail from deep bass to sparkling highs across an ultra-wide frequency response ranging from 5Hz to 40kHz. For an audio engineer or mixer, this level of transparency is non-negotiable.
The build quality reflects its purpose as a professional reference tool. The housings are made of acoustically transparent aluminum honeycomb mesh, which reduces weight while enhancing acoustic performance. Weighing in at just 7.41 ounces, it is incredibly light, making it comfortable for extended sessions where listener fatigue is a real concern. The 3D wing support system automatically adjusts to your head shape, providing a secure fit without applying pressure points. Combined with breathable fabric earpads, this is a device meant to disappear on your head so you can focus entirely on the mix.
However, the trade-offs are significant for casual or mobile use. This is a wired device with a 3.5mm jack, tethering you to your source. It lacks any wireless capability or built-in battery. Furthermore, because of the open-back design, sound leaks out, and external noise leaks in. It offers passive noise cancellation through isolation, but it will not block out a loud gym or a noisy street. It is also highly sensitive to impedance, rated at 470 ohms, meaning it needs a powerful amplifier to drive it properly. It is not a device for walking around; it is a stationary tool for critical listening.
• Best for mobility and situational awareness → Solid Signal Eartec Ultralite PRO16-SR. Its wireless RF connectivity and open-ear design let you move freely while hearing your surroundings.
• Best for critical audio accuracy → Generic ATH-R70X. The 5Hz-40kHz range and open-back architecture reveal details other headphones miss.
• Best for long shifts without charging → Solid Signal Eartec Ultralite PRO16-SR. Ten hours of battery life with a swappable battery ensures you never stop working.
• Best for studio mixing and mastering → Generic ATH-R70X. The high-efficiency magnets and pure alloy circuit minimize distortion for clean reproduction.
• Best for group communication → Solid Signal Eartec Ultralite PRO16-SR. Supports full-duplex talk between up to 16 users simultaneously without a hub.
• Best for comfort during long static sessions → Generic ATH-R70X. The 3D wing support and breathable pads prevent fatigue over hours of use.
• Best for active movement (e.g., for gym) → Solid Signal Eartec Ultralite PRO16-SR. It is the only option here capable of functioning as a multipoint true wireless earbud solution for a crew in motion.
• Best for detailed music production → Generic ATH-R70X. The wide frequency response captures nuances essential for professional audio work.
I would buy the Solid Signal Eartec Ultralite PRO16-SR if I were looking for a best multipoint gaming headset for gym scenarios or any situation requiring constant crew communication. The ability to stay connected wirelessly while keeping one ear open to the environment is a unique advantage that no other product in this comparison offers. It solves the specific problem of staying safe and informed while working hard.
Conversely, I would recommend the Generic ATH-R70X only if my primary goal was creating or editing audio in a quiet room. Its specifications are impressive, but they serve a very different purpose than the Eartec. For anyone trying to find the best bone conduction headphones for gym activities or a similar active use case, the Eartec is the clear winner. The ATH-R70X is a masterpiece of engineering for the studio, but it has no place in a dynamic, noisy environment.
No, this is an add-on unit. You must already own a PRO16 Main headset and at least one other Remote to pair with it; it will not work as a standalone starter kit.
No, the ATH-R70X uses a wired connection via a 3.5mm jack. They require a compatible audio interface or computer to function and have no internal battery.
No, the Eartec PRO16-SR uses an open-ear design specifically to let you hear your environment, such as alarms or traffic, while communicating with your team.
Because they have a high impedance of 470 ohms, they require a dedicated headphone amplifier to reach their full potential, whereas the Eartec operates on its own internal battery and RF system.
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.