Widex Evoke BTE 312 FA Series: A Complete Product Description

The Widex Evoke BTE 312 FA series — comprising the FA 440, FA 330, FA 220 and FA 110 — is a behind‑the‑ear hearing aid from the Evoke™ family, widely recognised as the world’s first platform to integrate live machine learning. Evoke marked a paradigm shift in hearing care: instead of relying solely on audiologist‑configured presets, Evoke learns directly from the wearer’s preferences in real‑world environments, delivering a continuously improving, personalised listening experience.

The “BTE” design places the main body discreetly behind your ear, connected to a thin tube and either a standard dome or a custom earmold. This form factor offers larger, easier‑to‑handle controls, greater durability, and robust amplification power. The “312” designation indicates the device is powered by a disposable size 312 zinc‑air battery, offering extended runtime without the need for daily charging. Designed for individuals with mild to moderately severe hearing loss, the Evoke BTE 312 FA offers a fitting range of 0‑95 dB HL across all four technology levels. The “FA” (Fashion) series represents the standard BTE design, known for its sleek profile and reliable performance.

The Core Smart Technology: SoundSense Machine Learning

What truly sets Evoke apart is its SoundSense Technology, a machine‑learning platform that lives inside both the hearing aid and the companion smartphone app. Every time you use Evoke, it evolves — because it learns from the adjustments you make in different sound environments and applies that knowledge to similar situations in the future. This is achieved through two complementary features:

• SoundSense Learn – When you encounter a challenging listening situation, the Evoke app presents you with two alternative sound profiles (A vs B). Simply listen and select your preferred option. Repeat this process as many times as you wish, and the hearing aid gradually builds a personalised sound model tailored to your unique hearing preferences. The system uses anonymised data from users worldwide to continuously improve its recommendations.

• SoundSense Adapt – The hearing aid remembers every adjustment you have ever made and intelligently applies those preferences to new environments — even if you have never visited that particular location before. Your Evoke never forgets, it constantly applies what it has learned to deliver better sound automatically, without any manual intervention.

Underpinning these features is the powerful Fluid Sound Controller, a dual‑core processing system that continuously analyses incoming sound and automatically adjusts multiple parameters — including variable‑speed compression — to preserve natural sound quality while reacting quickly to dynamic acoustic environments. The Fluid Sound Analyzer maps out your environment into distinct sound classes and selects the optimal settings in real time.

Technology Levels: 440, 330, 220 and 110

The Evoke FA series is offered in four distinct performance levels. The number indicates the sophistication of the feature set, with 440 being the most advanced and 110 the essential entry level.

Widex Evoke FA 440 – Flagship Performance

The FA 440 is the most technologically advanced option in the Evoke BTE line. It features 15 processing channels for exceptionally precise sound shaping and 11 distinct sound classes that automatically identify your listening environment — from quiet conversation to a crowded restaurant or music concert — then apply the optimal settings for each. The 440 includes HD Locator for channel‑specific directionality, dramatically improving speech intelligibility in challenging noise. Advanced TruSound Softener smooths out sudden impact sounds like a door slam or clanking dishes. Digital Pinna helps you locate and focus naturally on voices in front or behind by mimicking the normal effect of your outer ear. Speech Enhancer Pro reduces noise and enhances speech in real time. The FA 440 offers up to five listening programs and the most refined version of SoundSense Learn. It also includes the Audibility Extender for high‑frequency sounds.

Widex Evoke FA 330 – Advanced Everyday Intelligence

The FA 330 offers 12 processing channels and a high degree of adaptability for most daily situations — from family gatherings to outdoor conversations. It retains HD Locator, Advanced TruSound Softener and Digital Pinna, but with slightly fewer fine‑tuning options than the 440. Users benefit from up to four listening programs and a highly effective version of SoundSense Learn, making it an excellent choice for active lifestyles. The FA 330 does not include the Audibility Extender.

Widex Evoke FA 220 – Solid Mid‑Range Choice

The FA 220 is a reliable option for users with quieter lifestyles or those who want core Evoke intelligence at a more accessible price point. It offers 10 processing channels, up to three listening programs, standard Speech Enhancer, and basic versions of wind and impact noise management. Although it lacks HD Locator, Digital Pinna, and the Audibility Extender, it still includes the complete SoundSense Learn & Adapt functionality and the Fluid Sound Controller, which together make it a very capable performer for most everyday listening scenarios.

Widex Evoke FA 110 – Essential Smart Hearing

The FA 110 provides core Evoke sound quality with streamlined features — ideal for first‑time users or those who primarily need amplification in quiet to moderately quiet environments. It comes with 6 processing channels and up to three listening programs. While it lacks the advanced directionality and sophisticated noise management of higher levels, it still includes SoundSense Learn & Adapt, TrueInput technology (113 dB SPL input range), dynamic feedback cancellation, and variable‑speed compression. Users can still control the hearing aid via the Evoke app and benefit from the machine‑learning personalisation that makes Evoke unique.

Features Common to All Four Levels

Across all technology levels, the Widex Evoke BTE 312 FA shares a robust core of essential technologies:

• SoundSense Learn & Adapt – Machine learning personalisation is available on all four levels, making even the FA 110 a “smart” hearing aid that improves over time.

• TrueInput Technology – An expanded input range of 113 dB SPL, handling very loud sounds without distortion while preserving soft sounds.

• Dynamic Feedback Controller – Fast, artefact‑free cancellation of whistling feedback, engineered to adapt and preserve sound quality.

• Variable‑speed compression – Automatically adjusts from fast to slow for consistent speech understanding and listening comfort at all input levels.

• ZEN Tinnitus Management – A built‑in tinnitus relief tool using soothing fractal tones, available on all levels.

• Telecoil – Connect easily to induction loop systems in theatres, places of worship and public venues.

• Programmable push button – Customisable for short or long presses to change programs or adjust volume.

• IP68 dust/water protection – The device is resistant to dust and can withstand immersion in water, making it suitable for active users.

• Widex Evoke App – Full control over volume, programs and personalisation, plus access to SoundSense Learn. The app uses acoustic signals (your phone’s speaker) to communicate with the hearing aids.

• DEX accessory compatibility – Works with TV Play 2 (direct TV streaming), RC‑DEX (simple remote control) and COM‑DEX (hands‑free streaming from any Bluetooth phone).

What Is Not Included (Honest Disclosure)

The Widex Evoke BTE 312 FA does not include:

• Direct audio streaming from smartphones (no MFi, no ASHA, no Bluetooth). For streaming, you would need a COM‑DEX accessory.

• Hands‑free calling (you must speak into your phone during calls).

• Rechargeable battery – this model uses disposable size 312 batteries only.

• Ultra‑fast PureSound™ processing (<0.5 ms) found in newer Widex Moment models; Evoke uses a different processing architecture.

• AI Sound Assistant – the machine learning in Evoke is user‑guided (SoundSense) rather than fully automated.

The Evoke FA series is designed for users who want the intelligence of machine learning in a durable, easy‑to‑handle BTE form factor, without the complexity or cost of wireless streaming. It is an excellent choice for first‑time users, budget‑conscious buyers, or anyone who prefers the simplicity of disposable batteries and app‑based (or remote) control.

Physical Design and Battery Life

The size 312 battery provides up to 160 hours of use — approximately 10 days of typical wear — before needing replacement. The hearing aid features a battery door that doubles as an on/off switch: open to power down, close to turn it on. Audible low‑battery warnings indicate when a replacement is needed.

The Evoke BTE 312 FA is supplied in a standard beige colour, with other colour housing options available subject to delivery lead time. The device can be configured with either a classic hook for use with a custom earmould or thin tubes for open‑fit domes, offering flexibility to match your hearing loss profile. The push button is large and easy to locate, making it ideal for users with dexterity challenges.

Who Is It For?

The Widex Evoke BTE 312 FA is best suited for users with mild to moderately severe hearing loss (up to 95 dB HL) who want a durable, easy‑to‑handle BTE with machine‑learning personalisation and long battery life — at a more accessible price than newer Moment or Allure models. Choose the FA 440 for flagship performance with 15 channels, 11 sound classes and the Audibility Extender; FA 330 for advanced everyday intelligence; FA 220 for solid mid‑range value; and FA 110 for essential smart hearing at the most accessible price.