Stereo Audio Isolator (Screw Connectors)

PAM8302 Class D mono digital audio amplifier module. The system allows you to connect one loudspeaker with an impedance of 4 to 8 Ω and a power of 2.5 W. The board is equipped with a STEMMA connector. Adafruit 5647

Audio Analyzer is a module with sound analyzer based on the MSGEQ7 system. It divides the sound into seven frequency bands, and then allows you to read the peak levels of each band. It allows you to measure the sound in the following frequencies: 63Hz, 160Hz, 400Hz, 1kHz, 2.5kHz, 6.25kHz and 16kHz. DFRobot DFR0126

Digital audio level indicator consisting of 56 LEDs per channel. Powered by a micro USB connector, it can work with audio players, telephones or computers or display the audio level on the basis of reading from the built-in microphone

Module with class D mono audio amplifier designed for QT Py and Xiao boards. It is based on the MAX98357 system and can work with a loudspeaker from 4 to 8 Ω with a power of up to 3 W. It communicates via the I2S interface. Adafruit 5770

Microphone preamplifier based on the AD828 chip. Powered with DC voltage from 9 V to 24 V or AC in the range from 8 V to 16 V

Sound recording module with I2C interface. It can store sounds up to 100 seconds long. DFRobot SEN0197

LM386 audio amplifier module in a set with a loudspeaker. The board is equipped with a Grove connector and is controlled by a PWM signal. Seeed Studio 101020853

The PAM8403 class D stereo digital audio amplifier module is equipped with Bluetooth communication. The system allows you to connect two speakers with an impedance from 4 to 8 Ω and a power of 3 W

Two-way speaker crossover with a division frequency of 2500Hz/3000Hz. Works with 4 to 8 ohm speakers and offers up to 250 watts of power

Stereo audio isolator based on two transformers. It allows to eliminate noise in the audio path resulting from different ground resistances of the sound source and the receiver. XH-M372

Expansion module with audio and video outputs dedicated to Raspberry Pi Pico boards. It has a VGA output, SD card slot, audio outputs and control buttons. Pimoroni PIM553

A module with a MEMS microphone and an amplifier that will allow you to detect a voice, a clap or a door slam. The board has an analog output. SparkFun BOB-18011

MP3 player with support for microSD cards and USB memory. It can work as a separate device and play sounds from a card or pendrive

Class AB audio amplifier with three output channels. It can be powered with AC voltage from 8 to 18 V and has two outputs with a power of 18 W (left and right) and one with a power of 20 W (bass)

A module with an electret microphone and amplifier that will allow you to detect voice, clap, slam doors and other sounds using an analog or digital output. SparkFun SEN-14262