Bone Conduction Kit - a set with a vibration generator

Class D digital audio amplifier with Bluetooth 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 in the range from 9 to 24 V. NS-01G

100 W audio signal converter that reduces the speaker signal from the player to the level of RCA inputs. It allows you to connect the radio to an external power amplifier

LC filter connected to the output of the DC power supply with a voltage from 0 to 50 V and a maximum current of 3 A. It reduces voltage ripple and interference caused by the power supply

MP3 panel for installation in the audio device. It allows you to play files in MP3 format from a USB memory or a microSD card. It has a built-in 3.5mm Jack connector with an audio output

WIG-12897WAV file player module controlled by UART interface or switching inputs. It is based on a 2 W audio amplifier. The board has a 3.5 mm audio output and a speaker connector. The files are played from the microSD card. SparkFun DEV-13660

The XH-A902 preamplifier module with the NE5532 chip provides a fivefold increase in sound power, operating in the voltage range of 12-30V. Using the renowned NE5532 chip, it offers excellent amplification in two channels,

Module with audio amplifier and 8 Ω speaker with a power of 1 W. The board is equipped with a STEMMA connector. Adafruit 3885

Zeenko ZK05-UM is a wideband low-noise amplifier with high gain and excellent linearity, operating in the 100 kHz – 6 GHz band. Powered via USB-C, it offers a low noise level and high overload resistance, making it a suitable choice for RF applications, antenna systems, and the input stages of spectrum analyzers.

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

BOB-11044 OSHWTPA2005D1 class D audio amplifier module. The chip can work with a loudspeaker up to 1.4 W and 8 Ohm. SparkFun BOB-1104

Digital mono audio amplifier based on the HXJ8002 chip. It has one channel with a power of 3 W and can work with speakers from 2 to 8 Ω. It is powered with the voltage from 2 V to 5.5 V

4-channel input selector for audio amplifier. Equipped with terminal connectors and controlled by a rotary switch

Sound terminal expansion board based on STA350BW for STM32 Nucleo

The Spectrum Shield enables your Arduino with the capability of splitting a stereo audio input into 7-bands per channel. You can then read the amplitude of each channel using the ADC on your Arduino allowing you to control everything from LEDs to motors, pumps to relays, or even fire, all with sound. DEV-13116

This Bluetooth Audio receiver module includes a USB port and TF card slot. With a pre-amp output, you can drive headphones or a 3W speaker directly. You can also add an active power amplifier and connect a loudspeaker. The module supports MP3, WMA, WAV and lossless FLAC audio formats. DFRobot TEL0108