Widex Evoke Mini BTE 312 FM Series: A Complete Product Description

The Widex Evoke BTE 312 FM series — comprising the FM 440, FM 330, FM 220 and FM 110 — is a behind‑the‑ear (BTE) 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 “FM” stands for “Fashion Mini,” which is Widex’s smallest and most discreet BTE hearing aid. The Mini-BTE design places the main body behind your ear, connected to either an ultra‑thin tube with a soft dome or a traditional hook with a custom earmold. This discreet profile offers larger, easier‑to‑handle controls than smaller RIC devices, while remaining far less obtrusive than standard BTE models. 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 FM offers a fitting range of 0‑95 dB HL across all four technology levels.

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. You can carry out this comparison as often as you like, and over time the device will create a custom sound profile that matches your individual listening tastes. The system uses anonymised data from users worldwide to continuously improve its recommendations, helping you find your personal sound 25% faster than before.

• 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, and 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, with twice as much training as previous classifiers, maps out the environment more accurately than ever to select the correct sound class.

Technology Levels: 440, 330, 220 and 110

The Evoke Fashion Mini 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.

Paraphrased note: The SoundSense Learn & Adapt machine learning functionality is included in every technology tier, from the flagship FM 440 down to the essential FM 110.

Widex Evoke FM 440 – Flagship Performance

The FM 440 is the most technologically advanced option in the Evoke Mini-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 party, traffic, music and city — then apply the optimal settings for each.

The FM 440 includes advanced directionality features such as HD Locator with Digital Pinna — a technology that uses channel‑specific directionality to dramatically improve speech intelligibility in challenging noise while helping you naturally determine the direction of voices whether they come from ahead or behind by replicating the ear’s natural sound‑filtering properties. TruSound Softener smooths out sudden impact sounds like a door slam or clanking dishes. It also features the Audibility Extender for enhanced high‑frequency sound perception, SmartWind Manager for superior outdoor performance, and up to five listening programs.

Widex Evoke FM 330 – Advanced Everyday Intelligence

The FM 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 with Digital Pinna, variable‑speed compression, TruSound Softener, and up to four listening programs. With 7 sound classes and an enhanced Speech Enhancer, the FM 330 is an excellent choice for users who want strong performance across varied environments without needing the absolute highest feature density.

Widex Evoke FM 220 – Solid Mid‑Range Choice

The FM 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, and essential noise‑management features. Although it lacks HD Locator and Digital Pinna, it still includes the full SoundSense Learn & Adapt capabilities and the Fluid Sound Controller, making it a capable performer in most everyday listening situations. The FM 220 features 4‑6 sound classes and basic wind and impact noise management.

Widex Evoke FM 110 – Essential Smart Hearing

The FM 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 FM shares a robust core of essential technologies:

• Paraphrased: Every one of the four technology tiers includes SoundSense machine learning personalisation, which means even the entry‑level FM 110 operates as an intelligent hearing aid that refines its performance with ongoing use.

• TrueInput Technology – An expanded input range of 113 dB SPL, handling very loud sounds without distortion while preserving soft sounds. This broad dynamic range ensures that loud, unexpected noises remain comfortable and never become harsh.

• 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.

• TONELINK App compatibility – Additional remote control functionality via smartphone app.

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

What Is Not Included (Honest Disclosure)

The Widex Evoke BTE 312 FM does not include:

• Direct audio streaming from smartphones (no built‑in MFi or ASHA). Unlike the “Direct” models in the Evoke range, the FM series requires a COM‑DEX accessory for Bluetooth streaming.

• Hands‑free calling (you must speak into your phone during calls, unless using COM‑DEX).

• 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.

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

The Evoke Fashion Mini series is designed for users who want the intelligence of machine learning in an unusually discreet, easy‑to‑handle BTE form factor, without the complexity or cost of built‑in 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 over daily charging.

Physical Design and Battery Life

The FM (Fashion Mini) is the smallest and most discreet BTE in the Evoke lineup, featuring a sleek, seamless design that rests comfortably behind the ear. The device is available in multiple colour options including beige, black, grey, blue, brown and white.

The size 312 battery provides approximately 155 hours of use — about 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 device can be fitted with either open fit tubes and domes (for mild high‑frequency loss) or an earhook with conventional earmold (for more significant loss requiring greater amplification).

Who Is It For?

The Widex Evoke BTE 312 FM is best suited for users with mild to moderately severe hearing loss (up to 95 dB HL) who want the intelligence of machine learning in an unusually discreet, easy‑to‑handle BTE form factor — without the daily commitment of charging. Choose the FM 440 for flagship performance with 15 channels, 11 sound classes and the Audibility Extender for high‑frequency support; FM 330 for advanced everyday intelligence with Digital Pinna; FM 220 for solid mid‑range value; and FM 110 for essential smart hearing at the most accessible price.