BeethoSOL EM-C110 Neckband

The BeethoSOL EM-C110 (developed by BSL Co., Ltd.) is not just a standard wireless neckband; it is actually a highly advanced hybrid Bluetooth Hearing Aid / Sound Amplifier.

Acoustic & Hearing Performance

The device functions as a 5CH + 5CH (5-channel) Digital Hearing Enhancer. It utilizes premium hardware and advanced digital signal processing to help individuals with mild to moderate hearing loss.

Driver Technology: Employs Balanced Armature (B/A) receivers instead of standard dynamic drivers. This technology is typically reserved for high-end audio and premium medical hearing aids, offering extremely high clarity, crisp high-frequency reproduction, and zero distortion.

Signal Processing: Features Wide Dynamic Range Compression (WDRC) and intelligent feedback/noise cancellation to isolate environmental clutter and amplify clear vocal frequencies.

Acoustic Metrics:

• Peak Output (OSPL90): 118\text{ dB}

• Average Output (OSPL90): 108\text{ dB}

• Maximum Gain (P_i = 50\text{ dB} SPL): 38\text{ dB}

• Full-on Gain (Average at 50\text{ dB}): 30\text{ dB}

• Frequency Range: 250\text{Hz} to 5500\text{ Hz}

• Equivalent Input Noise: 30\text{ dB}

  Physical Layout & Controls

  The chassis features a smooth neckband design with tactile physical interfaces for individuals who struggle with tiny, standard hearing aid controls:

  • Dual Microphones: Built with separate physical ports—an Enhancer MIC (captures external ambient sound for amplification) and a Phone MIC (for active voice calls).

  • On-Board Controls: Dedicated physical Jog Switch, a primary PLAY Button, and a CALL Button.

  • Anatomy of the Band: Includes the main earphone receiver cables, a centralized power toggle, and an onboard micro-USB/USB-C charging port.

    Software & “Self-Fitting” App

    One of the core features of the EM-C110 is its “BeethoSOL” smartphone app (fully compatible with Android and iOS), eliminating the need for periodic medical office visits for fitting adjustments:

    • Self-Hearing Test: Users can perform an autonomous, step-by-step hearing assessment directly through the app via simple button prompts.

    • Automated Equalization: The app automatically adjusts the volume and frequency bands based on the user’s test profile to compensate for localized hearing loss.

    • Environment Profiles: Features 4 specialized preset environmental filters that tune out specific static noises:

      • All-round Mode

      • Indoor Mode

      • Outdoor Mode

      • Traffic Mode

    Bluetooth & Battery Connectivity Specs

    • Bluetooth Version: 5.0.

    • Supported Protocols / Profiles: A2DP, AVRCP, SPP, HFP.

    • Dual-Streaming (BeethoSOL Mode): Allows you to listen to ambient amplified environment sounds simultaneously while streaming music or taking phone calls over Bluetooth.

    • Power Cell: Rechargeable Lithium-Ion (210\text{mAh}).

    • Battery Endurance:

      • Standalone Hearing Amplifier Mode: Up to 18 hours

      • Music Playback Time: Up to 8 hours

      • Voice Talk Time: Up to 8 hours

      • Standby Time: Up to 100 hours