Bone Conduction Kit - a set with a vibration generator

Class A power amplifier with two channels, 45 W. Built on the popular J. Hood design from 1969

The LM4950 audio power amplifier module with a power of 3 W per channel, powered by 10-15 VDC, equipped with a 3.5 mm Jack socket for audio input and screw connections for loudspeaker outputs, is equipped with thermal and short-circuit protection. It provides good sound quality with low energy consumption, making it ideal for small audio systems

Class D digital audio amplifier with Bluetooth 5.0 module. It has two channels with a power of 50 W and can work with speakers from 4 to 8 Ω. It is powered with the voltage ranging from 9 to 24 V

WAV files player module. It is based on a DAC converter and an audio amplifier, there is a 3.5 mm audio output on the board. The files are played from the microSD card. Adafruit 94

Multilingual voice synthesizer module. Converts a stream of digital text to natural sound. Using the widely recognized DECtalk text and speech synthesizer engine. Sparkfun DEV-11711

The TPA3116D2 amplifier module is a digital class D amplifier, offering 2x50W of power for stereo channels and 100W for the subwoofer, powered by 12V-24V. Thanks to the built-in NE5532 low-pass filter, it provides clean bass sound, and three potentiometers allow you to adjust the volume and cutoff frequency.

Module with FM receiver, with its help it is possible to receive radio waves broadcast in the FM band (frequency 50-115MHz). The module has been equipped with a 3,5mm jack socket, through which you can connect headphones. The module has a connector in accordance with the Grove standard. Seeed Studio 107020006

Audio preamplifier module based on RC filters. Equipped with potentiometers to adjust bass, treble and volume level

HiFi stereo tube amplifier based on 6J1 and 6P1 tubes. Designed for use with loudspeakers up to 3 W and an impedance of 4 Ω or 8 Ω

Bluetooth audio receiver module that allows wireless transmission of sounds. It is equipped with a PCB antenna and a 3.5 mm Jack audio connector

Sound terminal expansion board based on STA350BW for STM32 Nucleo

WM8960 stereo codec module with driver for 1W class D speakers and headphones. It uses the I2S interface and the I2C bus to configure the system. SparkFun BOB-21772

Three-way crossover with a crossover frequency of 900 Hz and 5000 Hz. It works with speakers with an impedance of 5 to 8 Ω and offers power up to 150 W

Expansion board compatible with STM32 Nucleo. Allows you to prototype solutions with digital microphones. STMicroelectronics X-NUCLEO-CCA02M2

Audio module based on a 32-bit PCM5102A DAC converter intended for cooperation, among others with Raspberry Pi minicomputers. Communication via the I2S interface. GY-PCM5102

Digital mono audio amplifier. It has one channel with a power of 30 W and can work with speakers from 4 to 8 Ω. It is powered with the voltage from 8 to 26 V.