Product Overview

The L4-BTE-H is a 4 channel digital BTE hearing aid developed for hearing aid distributors, audiology clinics, hearing centers, medical device importers and professional hearing care organizations that need a clearly documented starting configuration within the L-BTE-H family.

The model provides 4 independently adjustable compression and amplification channels, 8 independently adjustable bands and 16 DSP channels on the ACOD2101 intelligent multi-core DSP platform. ERAC 1.0 Context Analysis Based Intelligent Multi-Compression Technology with a Dual-Knee structure forms the compression architecture.

Feedback management is provided by AFC 2.0 Adaptive Feedback Cancellation together with SIW technology. ENDR 1.0 Environment Detection and Noise Reduction is specified at up to 16 dB. Directional Dual-Microphone Technology is specified as All Direction, while Directional Speech Enhancement is not included.

For B2B buyers, the value of this model is its clear technical baseline. Fitting structure, electroacoustic data and operating functions can be reviewed directly for catalog planning, sample evaluation, quotation preparation and comparison with higher L-BTE-H configurations.

Electroacoustic Benchmark for B2B Evaluation

A major part of the L4-BTE-H product identity is its documented electroacoustic profile. Maximum OSPL90 is 134 dB and HFA OSPL90 is 126 dB. Maximum FOG50 is 63 dB and HFA FOG50 is 55 dB. RTG Target and RTG Measured are both specified at 55 dB.

Additional reference values include a 200–5000 Hz frequency range, 1.5 mA battery current, 20 dB EQ and 3% THD at 500 Hz, 800 Hz and 1600 Hz.

For distributors, these values provide a practical basis for technical sheets and model comparison. For clinics and hearing centers, the same information can be assessed together with the fitting-channel structure during product evaluation.

For buyers considering a 4 channel digital BTE hearing aid, this documented profile creates a clear reference point before moving to models with greater fitting capacity or additional directional and environmental-management functions.

4 / 8 / 16 Fitting Architecture

L4-BTE-H uses a simple three-part fitting structure:

• 4 independently adjustable compression and amplification channels
• 8 independently adjustable bands
• 16 DSP channels

This architecture gives professional fitting teams defined adjustment points while keeping the model easy to position as the first configuration in the range.

For distributors, the 4 / 8 / 16 structure also supports straightforward product training. L8-BTE-H expands the architecture to 8 / 16 / 32 and introduces Fixed Direction processing. L12-BTE-H moves into the Standard environmental-processing tier, while L16-BTE-H increases fitting and DSP capacity within that tier.

This makes the 4 channel digital BTE hearing aid a useful baseline SKU for buyers building a structured BTE portfolio with clearly differentiated technical steps.

Feedback, Noise Reduction and Microphone Configuration

The signal-processing package combines ERAC 1.0 Dual-Knee compression, AFC 2.0 Adaptive Feedback Cancellation and SIW technology.

ENDR 1.0 is specified at up to 16 dB. The microphone configuration is listed as All Direction. Environment Recognition, Noise Source Tracking and Suppression, Transient Noise Management, Wind Noise Management and Directional Speech Enhancement are not included at this level.

These boundaries are useful for B2B model selection because they make the progression to higher models easy to explain through specific technical changes rather than broad marketing labels.

Professional Device Functions

L4-BTE-H provides 4 selectable programs and includes an Internal Sound Field Assessment System and Internal Audiometer System.

Additional functions include Adjustable Turn-on Delay, Occlusion Effect Management, Low Battery Power Notification, Adjustable Notification Volume, Volume Control, FM Interface Compatibility, Auto Phone Function and Memory After Power-off.

Personalized Data Storage is specified as Standard. Nano Coating Technology is included.

For professional hearing care organizations, this function set adds a practical operating layer to the fitting and electroacoustic specifications. For distributors, it provides additional technical content for product documents and account-level comparisons.

B2B Portfolio Positioning

As a 4 channel digital BTE hearing aid, L4-BTE-H is suitable for distributors, importers, clinics and hearing centers that need the entry configuration of a technically structured BTE family.

Its product identity is centered on 4 fitting channels, 8 adjustable bands, 16 DSP channels, AFC 2.0, ENDR 1.0 up to 16 dB, All Direction microphone configuration and the 134 / 126 dB OSPL90 profile.

This gives distributors a clear technical basis for product comparison and portfolio positioning. The model can serve as the reference point from which the additional capacity and processing functions of L8-BTE-H, L12-BTE-H and L16-BTE-H are explained.

Technical Specifications

FAQ

How many fitting channels does L4-BTE-H provide?

It provides 4 independently adjustable compression and amplification channels, 8 adjustable bands and 16 DSP channels.

What are the main electroacoustic specifications?

Maximum OSPL90 is 134 dB, HFA OSPL90 is 126 dB, maximum FOG50 is 63 dB and HFA FOG50 is 55 dB. The frequency range is 200–5000 Hz.

Which feedback technology is included?

AFC 2.0 Adaptive Feedback Cancellation is included together with SIW technology.

What microphone mode is specified?

Directional Dual-Microphone Technology is specified as All Direction.

Are FM Interface Compatibility and Auto Phone Function included?

Yes. Both functions are included.

Contact AcoSound

Looking for a 4 channel digital BTE hearing aid for your professional product portfolio? Contact AcoSound for L4-BTE-H specifications, samples and B2B project information.