Product Overview

The L4-BTE-M is a 4 channel BTE hearing aid developed for hearing aid distributors, audiology clinics, hearing centers and professional hearing care organizations that need a clearly defined entry configuration within a multi-model BTE portfolio.

Built on the ACOD2101 intelligent multi-core DSP platform, the device provides 4 independently adjustable compression and amplification channels, 8 independently adjustable bands and 16 DSP channels.

Its core signal-processing architecture combines ERAC 1.0 Dual-Knee compression, AFC 2.0 Adaptive Feedback Cancellation with two levels, SIW technology and ENDR 1.0 noise reduction specified at up to 15 dB.

The model also provides four selectable programs, an Internal Sound Field Assessment System, an Internal Audiometer System and multiple device-management functions for professional fitting and follow-up workflows. FM Interface Compatibility and Auto Phone Function are supported.

For distributors, L4-BTE-M creates a clear starting point in the L-BTE-M range before customers move to configurations with higher fitting capacity, directional processing or broader environmental-management functions.

A Clear 4 / 8 / 16 Fitting Structure

L4-BTE-M uses a 4 / 8 / 16 architecture: 4 independently adjustable fitting channels, 8 independently adjustable bands and 16 DSP channels.

This structure gives hearing care teams defined frequency-specific adjustment points while keeping the fitting architecture straightforward.

The ACOD2101 processor provides the digital foundation for amplification, compression, feedback management and environmental noise reduction.

For distributors, these specifications create an easy-to-communicate technical identity for catalogs, product training and B2B comparison materials. Instead of positioning the model through broad descriptions, sales teams can explain it through measurable channel, band and DSP specifications.

The architecture also provides a clear reference point for the other models in the range. Professional customers that need additional fitting resolution or environmental-processing functions can move to L8-BTE-M, L12-BTE-M or L16-BTE-M according to their requirements.

ERAC 1.0 and AFC 2.0 Processing Foundation

The product uses ERAC 1.0 Context Analysis Based Intelligent Multi-Compression Technology with a Dual-Knee structure.

The compression platform operates across the independently adjustable fitting channels and forms part of the digital amplification system.

Feedback management is provided by AFC 2.0 Adaptive Feedback Cancellation with two levels, together with SIW technology.

These technologies provide a defined processing foundation for fitting and technical comparison.

For professional hearing care organizations, channel adjustment, compression and feedback management can be considered together during device configuration. For distributors, the processing specifications provide objective technical information that can be incorporated into training materials and product documentation.

Essential ENDR 1.0 Noise Management

L4-BTE-M uses ENDR 1.0 Environment Detection and Noise Reduction, specified at up to 15 dB.

Environment Recognition, dedicated Transient Noise Management and Wind Noise Management are not included in this configuration.

This gives the model a focused environmental-processing package centered on ENDR 1.0.

For B2B portfolios, the distinction is useful because the product can be positioned around essential fitting, feedback and noise-management functions without overlapping unnecessarily with the higher configurations.

Customers requiring additional environmental functions can progress through the series according to specific fitting and processing requirements.

All Direction Microphone Configuration

The technical specification identifies the Directional Dual-Microphone mode as All Direction, while Directional Speech Enhancement is not included.

For professional buyers, the All Direction microphone configuration provides another clear specification point when comparing models across the L-BTE-M range.

L8-BTE-M moves to a Fixed Direction configuration, while L12-BTE-M and L16-BTE-M use the directional technologies specified for the upper tier.

This progression gives distributors an additional way to structure product comparisons beyond channel count alone.

Professional Fitting and Device Functions

L4-BTE-M provides four 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
• Memory After Power-off
• Standard Personalized Data Storage
• Nano Coating Technology

These functions support fitting, assessment and routine device management across clinics, hearing centers and distributor-led professional programs.

The combination gives B2B buyers a broader set of operational specifications than the channel configuration alone.

B2B Portfolio Positioning

L4-BTE-M is suitable for hearing aid distributors, audiology clinics, hearing centers, medical device importers and professional hearing care networks that need an entry-level BTE configuration with clearly documented technical specifications.

Its commercial positioning is built around 4 fitting channels, 8 adjustable bands, 16 DSP channels, AFC 2.0 feedback management, ENDR 1.0 up to 15 dB and an All Direction microphone configuration.

This allows the model to serve as the base tier of a structured product family.

L8-BTE-M can then address customers requiring additional fitting resolution and Fixed Direction processing, while L12-BTE-M and L16-BTE-M provide broader environmental and directional functions.

For distributors, this creates a logical portfolio progression. For professional buyers, it provides clearer criteria for selecting a configuration based on actual technical requirements.

Technical Specifications

FAQ

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

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

Which feedback technology is included?

The model uses AFC 2.0 Adaptive Feedback Cancellation with two levels together with SIW technology.

What noise reduction system does it use?

ENDR 1.0 is specified at up to 15 dB.

What microphone configuration is specified?

The Directional Dual-Microphone mode is listed as All Direction, while Directional Speech Enhancement is not included.

Are FM Interface Compatibility and Auto Phone Function supported?

Yes. Both functions are supported.

Contact AcoSound

Looking for a professional 4 channel BTE hearing aid for your product portfolio?

Contact AcoSound for L4-BTE-M specifications, sample information and B2B project support.