Overview – Trihear Liber assistive listening device

The Trihear Liber assistive listening device is a next-generation personal amplifier with a remote microphone and open-ear headset. It is designed to help people hear speech more clearly at home, at work and in public places. The system combines a lightweight behind-the-head headset, a compact remote microphone and modern Bluetooth technology. As a result, users can bring important voices closer and reduce the impact of background noise.

Liber streams sound from nearby speech, from across a room or directly from a TV. With ultra-low latency processing, audio feels natural and in sync. At the same time, simple controls keep the device easy to use in everyday situations.

Clearer speech with noise reduction and volume control

First, the Trihear Liber offers 9 levels of volume control. This allows users to fine-tune loudness to match different environments, from quiet rooms to noisier spaces. Adjustments are quick, so the sound can be adapted on the fly.

In addition, Liber includes 16dB digital noise reduction. This feature helps reduce steady background noise and lifts speech forward. Voices become easier to follow, even when there is constant low-level noise in the environment.

Together, volume control and noise reduction give users more control over how they hear. They can set a comfortable level and let the device handle much of the unwanted noise.

Remote microphone and wireless TV streaming

A key part of the Trihear Liber assistive listening device is its multifunctional remote microphone. This small unit combines two roles in one: a remote mic for conversations and a TV streamer for media.

For conversations, the microphone can be clipped to a speaker’s clothing, placed near a lecturer or set on a meeting table. It then streams that voice directly to the headset at a distance of up to about 100 ft or 30 metres. This helps in classrooms, restaurants, meetings and other situations where the talker is not right beside the listener.

The same remote microphone can also act as a wireless TV streamer. It can be connected to the TV with an audio cable or placed close to the TV speaker. In both cases, the listener hears clearer sound in the headset, while others in the room can keep using the normal TV volume.

Ultra-low latency audio and Bluetooth 5.3

Trihear Liber is built with ultra-low latency processing, around a few tens of milliseconds. In practice, this means there is very little delay between the live sound and the audio heard in the headset. Lip movements and sound stay aligned, which keeps conversations and TV viewing natural.

Moreover, the device supports Bluetooth 5.3. Users can pair it with compatible smartphones, tablets and other devices for calls, video chats, music and podcasts. Switching between remote microphone mode and Bluetooth mode is simple, using the dedicated mode button. As a result, one device covers both assistive listening and everyday media use.

Open-ear headset for all-day comfort

The Trihear Liber assistive listening device uses a behind-the-head, open-ear design. The headset rests lightly around the back of the head and leaves the ear canal relatively open. This provides a more natural listening experience and helps users stay aware of surrounding sounds.

Because the headset is lightweight, it can be worn for long periods with less fatigue. The open-ear style also avoids blocking the ears, which some people find uncomfortable with in-ear earphones. Overall, the design supports extended daily use in work, home and social environments.

Charging is also straightforward. The built-in rechargeable battery fully charges in about one hour and then provides up to roughly ten hours of use. This makes Liber suitable for a full day of activity between charges.

Who is Trihear Liber for?

The Trihear Liber assistive listening device is intended for adults who need extra help hearing in certain situations. It can support people who are hard of hearing, older adults or anyone who simply wants clearer sound in challenging listening environments.

Typical use cases include:

• following conversations in restaurants, meetings or group settings;

• listening to a teacher, trainer or presenter with the remote mic placed near them;

• watching TV with clearer sound while others use the normal TV audio;

• taking calls and streaming media through Bluetooth with extra clarity.

Liber is an assistive listening device, not a programmed hearing aid. It does not replace a hearing test or professional hearing care. However, it provides a practical, easy-to-use solution for many everyday listening challenges.

Key technical highlights

• Trihear Liber assistive listening device with remote microphone and open-ear headset

• 2-in-1 remote microphone for conversation and TV streaming

• Working distance up to about 100 ft / 30 metres in suitable conditions

• Ultra-low latency sound processing for natural, in-sync audio

• 9 levels of volume control to match different listening environments

• 16dB digital noise reduction to reduce background noise and enhance voices

• Bluetooth 5.3 for clear voice calls and music or media streaming

• Lightweight, open-ear behind-the-head design for all-day comfort

• Rechargeable battery with fast charge (about 1 hour) and up to 10 hours of use per charge

• Supplied with headset, remote microphone, charging cable, audio cable and user documentation

See other assistive living devices on our website here.