Bone Conduction Kit

A bone conduction speaker kit that transmits sound as mechanical vibrations through solid surfaces — such as your skull — directly to the inner ear. Includes a bone conduction speaker, a driver board based on the MAX9814 microphone amplifier and PAM8406 power amplifier, and all necessary accessories.

The driver board features a built-in microphone for amplifying ambient sound (hearing aid mode) plus an audio input for playing external audio. A potentiometer with integrated power switch provides volume control, and configurable gain and AGC settings let you fine-tune performance.

Key Features

• Bone Conduction Speaker – 13 mm diameter × 5 mm, transmits sound via vibration
• MAX9814 Microphone Amplifier – High-sensitivity on-board mic with AGC
• PAM8406 Power Amplifier – Drives the bone conduction speaker
• Configurable Gain – 40 dB, 50 dB, or 60 dB via GAIN pin
• AGC Control – Adjustable activate/release ratio (1:500, 1:2000, or 1:4000)
• Volume/Power Potentiometer – Combined volume control and on/off switch
• Audio Input & Output – External audio in, L/R audio out
• Operating Voltage – 3.0–5.5 V DC (ideal for 3.7 V LiPo)
• Board Dimensions – 50 × 20 mm
• Weight – 36 g

Ideal For

• Building DIY bone conduction headphones
• Hearing aid prototyping
• Learning about bone conduction and audio amplification
• Wearable audio projects

Package Contents

• 1× Bone Conduction Speaker (30 cm cable)
• 1× Speaker Driver Board
• 1× Phone/Audio Cable (100 cm)
• Accessories