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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-22 · 7 min read · Independent comparison
These two look like they belong in the same conversation because both are wired, on-ear, and built for long days of listening. They are not. One is a listen-only headphone designed to survive students. The other is a single-ear communication tool designed to survive meetings. Pick the wrong one and you will spend the whole day annoyed.
• ThinkWrite TWT Audio Ergo — biggest strength: A flexible, chew-resistant frame with a 3.5mm jack that plugs into iPads, Chromebooks, Kindle Fires, Android tablets and laptops, backed by a 2-year warranty. It is built to be handed out, worn hard, and handed out again.
• ThinkWrite TWT Audio Ergo — biggest trade-off: It is a pure listening headphone. There is no boom microphone on a flexible arm, no call controls, and no USB connectivity. If your day runs on meetings, this is the wrong tool.
• EPOS Impact 100 — biggest strength: A Microsoft Teams-certified mono headset with a noise-cancelling boom mic, a dedicated Teams button, and USB-C plus a USB-A adapter for laptops, desktops and mobile devices.
• EPOS Impact 100 — biggest trade-off: The single-ear design is deliberate, but it is not for immersive listening. You get one ear of audio, and at 51 g the priority is all-day call comfort rather than rich music.
• Who each pick is for: Choose the TWT Audio Ergo for students, classrooms and shared listening devices. Choose the EPOS Impact 100 for office, call-centre and remote-work talk.
The TWT Audio Ergo is a wired on-ear headphone with a 3.5mm stereo jack and a 1.3m cord. It uses 32 ohm dynamic drivers covering 20 Hz to 20 kHz, which is a full-range spec for everyday listening — speech, video lessons, audiobooks, music. The ear cups are angled for long listening sessions, and the whole thing is deliberately light and flexible.
What it does best is survive. ThinkWrite built this around a strong, flexible ergonomic frame, and the cable is a chew-resistant fabric design meant to shrug off the worst a fidgety kid can throw at it. That is not marketing fluff in this category — it is the difference between a headphone that lasts a school year and one that lasts a week. The 2-year warranty backs that positioning up. The 3.5mm plug also matters: it works with Apple iPad, Google Chromebook, Kindle Fire, Android tablets and laptops without an adapter, which is exactly the mix of devices you find in a classroom or a school bag.
Buy it if you are equipping students, stocking a classroom, or you want a durable wired headphone for a kid, teen or adult who is hard on gear. The control type is listed as media control with touch as the method, so there is a media control element on the cable, and the spec sheet also lists active noise cancellation. The black plastic enclosure keeps it understated and easy to wipe down.
Skip it if your priority is voice. There is no boom microphone here. For meetings, softphone calls or anything where other people need to hear you, this is not the product — go to the EPOS. Skip it too if you want USB-C, since this is 3.5mm only.
The EPOS Impact 100 is a mono, single-ear USB headset aimed squarely at professional communication. It is Microsoft Teams certified, with a dedicated Teams button and notification alerts, and it is built for UC applications, webinars and call centres. Connectivity is USB-C, and EPOS includes a USB-A adapter so the same headset works on laptops, desktops and mobile devices without you hunting for a dongle.
The microphone is the point. It sits on a flexible boom arm and is noise-cancelling, which is the feature that earns its keep in open-plan offices, busy call centres and home setups where someone else is running a blender in the next room. The single-ear design is deliberate: you keep one ear open to your surroundings while still hearing the call clearly. EPOS adds soft silicone side support to keep it stable and comfortable through a full shift.
Controls live on an in-line module with backlit buttons for volume, mute and Teams alerts. That is the workflow most call-heavy jobs actually need — mute fast, adjust fast, see the status at a glance. It weighs 51 g, uses 40 ohm dynamic drivers, and the spec sheet lists an 8 kHz frequency response with 86 dB sensitivity. That 8 kHz ceiling is a speech-band tuning, which tells you what this headset is for: clear voice, not cinematic audio. The ear pad uses leather and silicone, and the box includes the adapter, cable, protective case and user manual, with a 2-year manufacturer warranty.
Buy it if you live in Teams or on calls and want one headset that handles voice properly across USB-C and USB-A machines. Skip it if you actually want music, movies or immersive stereo — the mono design and speech-focused tuning are the wrong fit.
• Best for classrooms and students → ThinkWrite TWT Audio Ergo. Chew-resistant fabric cable, flexible frame, 3.5mm universal compatibility, 2-year warranty.
• Best for calls and meetings → EPOS Impact 100. Microsoft Teams certified, dedicated Teams button, noise-cancelling boom mic.
• Best for surviving rough handling → ThinkWrite TWT Audio Ergo. The durability story is the entire design brief.
• Best for noisy shared offices → EPOS Impact 100. The noise-cancelling boom mic is built to filter out background chatter.
• Best for device flexibility → EPOS Impact 100. USB-C plus an included USB-A adapter covers laptops, desktops and mobile.
• Best for plug-and-play on school devices → ThinkWrite TWT Audio Ergo. The 3.5mm jack fits iPad, Chromebook, Kindle Fire, Android tablet and laptop without adapters.
• Best for immersive stereo listening → ThinkWrite TWT Audio Ergo. Two ears, full 20 Hz–20 kHz range, 32 ohm drivers.
• Best for staying aware of your surroundings while on a call → EPOS Impact 100. The mono, single-ear design keeps one ear free.
• Best for all-day light wear → EPOS Impact 100. 51 g with soft silicone side support, tuned for long shifts.
My Verdict
If I had to pick one for myself, I would buy the EPOS Impact 100 — because my day is full of calls, and the Teams certification, boom mic and USB-C-plus-USB-A flexibility solve the problem I actually have. In my opinion it is the more useful tool for anyone whose work runs through a headset.
The honest answer: these are not competitors. They are two different jobs wearing similar shapes.
ThinkWrite TWT Audio Ergo. It is built for classroom and home use with a flexible, chew-resistant frame, a 3.5mm jack that fits iPads, Chromebooks, Kindle Fires, Android tablets and laptops, and a 2-year warranty.
Yes. It has a flexible boom arm with a noise-cancelling microphone, plus a dedicated Microsoft Teams button and backlit in-line controls for volume, mute and Teams alerts.
Not really. It is a listen-only headphone with no boom microphone, so the person on the other end will not hear you. For calls, the EPOS Impact 100 is the right choice.
The EPOS Impact 100 covers USB-C plus USB-A via the included adapter, which suits laptops, desktops and mobile. The ThinkWrite TWT Audio Ergo covers any device with a standard 3.5mm jack, including school tablets and Chromebooks.
Both sit in different product categories, so value depends on which job you are buying for. Check the current price on Amazon using the button on this page before you decide.
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