Beyerdynamic Amiron Zero white

The Beyerdynamic Amiron Zero offer a different approach to on-the-go listening. These True Wireless earphones use a clip-on design that sits on the outer ear, without entering the ear canal. Each earbud houses an 18 × 11 × 4.85 mm dynamic driver and weighs 6 grams. They deliver a total battery life of 20 hours, IP54 protection against dust and splashes, and Bluetooth 5.4 connectivity. The open design allows you to remain aware of your surroundings, which can be useful during urban commutes, at work, or for outdoor activities.

A C-shaped design that redefines comfort

The Amiron Zero stand out with their clip-on design that radically departs from traditional in-ear monitors. Each earbud adopts an arc shape that hugs the outer ear without ever touching the ear canal. This C-shaped structure distributes the 6 grams of weight over a larger area, avoiding localized pressure points that can cause discomfort during extended wear.

The driver is positioned just in front of the ear canal entrance, a few millimeters away. This proximity allows sound to reach the ear clearly while keeping the canal unobstructed. Retention is ensured by the natural tension of the C-shaped arc against the ear cartilage. Unlike earbuds that press into the ear or pinch the lobe, this method preserves a sense of lightness even after several hours of use.

Fitting does not require interchangeable tips or complex handling. The unique shape adapts to most ear anatomies thanks to its gradual curvature. Simply position the earbud so that the arc surrounds the auricle and the speaker is oriented toward the ear canal. The motion quickly becomes intuitive after a few tries.

Open listening as a guiding principle

The open design of the Amiron Zero is based on a clear technical premise: not to isolate the listener from their surroundings. This approach fundamentally differs from earphones with passive or active isolation that aim to create a sound bubble cut off from the outside world. Here, the sound of music or podcasts coexists with ambient noise without masking it.

This auditory permeability offers practical advantages in several use cases. In urban environments, it allows you to perceive audible warnings from vehicles, cyclists, or pedestrians. At the office, it facilitates spontaneous conversations with colleagues without having to remove the earphones. During outdoor sports, it maintains awareness of potential hazards while providing a motivating soundtrack for your effort.

The 18 × 11 × 4.85 mm dynamic driver covers a frequency range from 20 Hz to 20 kHz, i.e., the full audible spectrum. Its placement close to the ear canal generates sufficient sound pressure for comfortable listening levels, while limiting sound leakage outward. The frequency response favors highs and mids, with a more restrained bass presence than on closed earphones. This sound signature provides a natural, airy listening experience without resonance or artificial coloring.

The soundstage benefits from the open design. Left and right channels remain physically separated, offering clear spatialization of stereo elements. Instruments and voices occupy distinct positions in the sound field, creating an impression of width and depth unusual for True Wireless earphones.

Connectivity and battery life for everyday use

The Amiron Zero feature a Bluetooth 5.4 chip, the latest version of this wireless standard. This generation offers lower power consumption than previous versions, reduced latency, and a theoretical range of 15 meters in open space. The connection is established via the charging case, which automatically pairs the two earbuds with each other before connecting to the audio source.

Supported audio codecs are limited to SBC (standard Bluetooth codec) and AAC (Advanced Audio Coding). These two formats cover the needs of the vast majority of mobile devices, especially iOS and Android smartphones. The absence of high-resolution codecs like aptX HD or LDAC can be explained by the open design itself: acoustic permeability limits the benefit of very high bitrates, since ambient noise naturally blends with the music.

Multipoint functionality allows the Amiron Zero to connect to two devices simultaneously. This capability is useful for juggling between a work computer and a personal smartphone without manually disconnecting and reconnecting the earphones.

Battery life reaches 6 hours of continuous listening on a full charge of the earbuds. The charging case adds another 14 hours, bringing the total to 20 hours. This compact case recharges via a USB-C port and features a metal hinge for durability. A fast-charging system provides 2 hours of playback after just 10 minutes of charging, a handy feature for last-minute outings.

Touch controls on each earbud let you manage playback, calls, and the voice assistant with simple taps. The touch surface responds to different tap patterns: one tap to pause, two to skip forward, three to go back. This approach avoids physical buttons that could create uncomfortable pressure on the ear when pressed.

Sound customization via the mobile app

The beyerdynamic app, available on iOS and Android, expands the Amiron Zero’s configuration options. Its interface provides access to several customization functions that fine-tune the earphones’ behavior according to individual preferences.

The 5-band graphic equalizer allows you to adjust the frequency balance. The five sliders correspond to five areas of the spectrum: sub-bass, bass, mid, high-mid, and treble. Each band can be boosted or reduced to tailor the sound signature to the content or personal taste. The app also offers presets by music genre (rock, classical, jazz, electronic) that automatically adjust the EQ to typical profiles.

The touch control customization section lets you reassign different gestures to desired functions. By default, a single tap pauses playback, but you can replace it with skipping to the next track or activating the voice assistant. This flexibility adapts to individual usage habits.

The app also manages earbud firmware updates. These updates can fix bugs, improve performance, or add new features after release. The process takes a few minutes over Bluetooth, with no cables or complex steps.

Materials and protection for everyday use

The construction of the Amiron Zero uses materials selected for lightness and durability. The earbud body combines a lightweight alloy for the structure and engineering polymers for the surfaces. This combination keeps the total weight at 6 grams while ensuring sufficient rigidity to withstand everyday handling.

The IP54 rating certifies protection against dust (first digit 5) and water splashes from all directions (second digit 4). In practical terms, the Amiron Zero can handle sweat during moderate physical activity, splashes during a light shower, or water droplets in a bathroom. This protection does not cover full immersion or strong water jets, but it is sufficient for everyday use without excessive precautions.

The charging case follows the same attention to build quality with its metal hinge. This technical choice avoids the premature wear of plastic-hinged cases, which tend to weaken after numerous openings. The compact size of the case makes it easy to carry in a pocket or bag without significant bulk.

The Amiron Zero come in three color variants: black, white, and sport. These finishes offer options to suit aesthetic preferences, from discreet to bold.

Technical specifications

Audio performance

• Transducer: dynamic
• Acoustic design: open
• Frequency response: 20 - 20000 Hz
• Clear, natural, and airy sound
• Supported audio codecs: SBC, AAC

Bluetooth connectivity

• Bluetooth version: 5.4
• Supported Bluetooth profiles: HFP / A2DP / AVRCP
• Bluetooth frequency range: 2402 - 2480 MHz
• Bluetooth transmission power: max. 12 dBm
• Range: up to 15 m
• Fully wireless transmission
• Multipoint connection: yes
• Customizable performance with the beyerdynamic app

Battery life and charging

• Total battery life: up to 20 h
  • Earbuds: up to 6 h per charge
  • Charging case: additional 14 h
• Battery capacity: 45 mAh per earbud, 400 mAh for the charging case
• Charging time: < 2 h
• USB-C fast charging: 10 min charge for 2 h of playback
• Charging port: USB-C
• Cable type: USB-C
• Wireless charging: no

Design and comfort

• Wearing style: open-ear clip earbuds
• Innovative open-clip design, no pressure on the ear canal
• Open listening system to stay aware of your surroundings
• Ultra-lightweight: approx. 6 g per earbud
• Comfortable for extended wear, barely noticeable even after several hours
• Rugged and elegant design with premium materials
• Weight of charging case with earbuds: approx. 57 g

Microphones and voice pickup

• Microphone type: 2 mics for voice pickup and ambient noise reduction, 1 bone conduction mic for voice pickup and ambient noise reduction

Protection and durability

• Protection rating: IP54 dust- and splash-resistant
• Elegant and robust charging case

Operating temperatures

• Operating temperature range: 0 to +45 °C
• Charging temperature range: 0 to +35 °C

Box contents

• Left and right earbuds
• Charging case
• USB-C charging cable
• Quick start guide
• Compliance booklet