Rechargeable in-ear amplifiers for everyday listening. Discreet, ready in minutes, and priced so that trying them is not a decision.
Certus means sure
Certus is Latin for sure, settled, proven. We make rechargeable in-ear amplifiers for everyday listening: discreet, simple, ready in minutes. Then we give you 90 days to hold us to the name.
Where we sit
Above us, a building full of appointments you pay for. Below us, gadgets that make the kettle as loud as your grandson. We are the row without a catch.
Below
Bargain-bin gadgets
£7 to £90
Ten to ninety pounds. They boost every noise at once, whistle, and end up in a drawer. No support, nobody to email.
Certus
Certus One
£149
A rechargeable in-ear amplifier for everyday listening, delivered to your door. 90 days at home to prove it. A two-year guarantee behind it.
Above
Private audiology
£1,000 to £3,000+
Months of appointments, a waiting room, and a price that needs a family meeting. You are paying for the building.
Above
The NHS route
Free
Genuinely good, and genuinely slow. A waiting list, limited choice, and still a diary full of appointments.
A rechargeable in-ear amplifier for everyday listening, sold as a pair with a pocket charging case. It sits deep enough that nobody has to know it is there.
90-day money-back · 2-year guarantee · free delivery
How it works
Cheap gadgets turn everything up at once, which is why the kettle drowns out your grandson. ClearVoice™ SpeechLift works the other way round.
Speech lives in a narrow band of frequencies. ClearVoice™ listens for that band and separates it from the room around it.
The speech band comes up. The clatter, the traffic and the kettle stay where they are, so you hear the sentence instead of the surroundings.
No app to fight with, no setup to learn. Put them in, and they get on with it from the first conversation.
Our standard
Plenty of sellers dress a gadget up as a medical device. We would rather tell you exactly what this is, and let the 90 days do the arguing.
Certus One is a rechargeable in-ear amplifier for everyday listening. We do not call it a medical device, because it is not one, and you deserve to know which you are buying.
Conversation, television, the telephone. If you are worried about your hearing itself, that is a conversation for a doctor, not a checkout page.
It makes speech easier to follow. It does not treat anything. Sudden hearing loss needs a doctor, not a purchase.
Why we exist
In it: a pair of devices that cost more than a family holiday, worn twice, abandoned. And next to that drawer, a father who had quietly stopped joining conversations. Who laughed a half-second after everyone else, because he was copying the room.
The clinics wanted thousands to try again. The cheap gadgets whistled and made the kettle as loud as the conversation. So we built the in-between, and named it after the only thing that matters when it is your money and your ears.
Read the whole story →In the box
No missing part, no accessory upsell three days after it arrives. You open it once and you are ready.
A day with Certus
Nobody buys these because they want a gadget. They want the dinner, the phone call and the evening to feel like theirs again.
Charged overnight, in before the tea is made, and nobody at the table knows they are there.
Charge the case, find the tip that seals, put them in. That is the whole setup.
One volume that suits the whole room, and everybody gets their evening back.
Small enough that the question never comes up, and light enough that you forget it is in.
Straight answers
No. Certus One sits deep in the ear canal in a matte shell that follows your ear, not against it. Most people never notice, including the person you are talking to.
A rechargeable in-ear amplifier for everyday listening. It makes speech easier to follow at the dinner table, on the phone and in front of the television. We do not call it a medical device, because it is not one.
Because it is a different thing entirely, sold a different way: direct to you, with no building and no appointments in the price.
Only if the tip does not seal. That is why 12 tips in 3 sizes come in the box instead of one guess. Find the seal and the whistle goes.
No. Put them in and they work. There is nothing to pair, download or update.
See a doctor first. If your hearing has changed suddenly, or only in one ear, that needs medical attention, not a purchase. We would rather lose the sale than be the reason you waited.
Send them back within 90 days and we refund you. No questions, no restocking fee, and a human answers the email.
Certus means sure
Wear Certus One at home for 90 days: the dinners, the phone calls, the television. If it does not earn its place in your ear, send it back and we refund you.
Try Certus One Risk-Free90-day money-back · 2-year guarantee · free delivery