Three-way speakers crossover 900Hz 5000Hz 150W

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

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

Module with an AB class amplifier based on the Boomer® LM4853 system. It can work in two modes: mono (power 1.5 W, load 4 Ω) or stereo (power 300 mW, load 8 Ω). It has a potentiometer for power control and gain control for the left and right channel. SparkFun DEV-14475

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

Module with a sound sensor based on an electret microphone and LM358 amplifier. The board is equipped with a Grove connector and communicates via an analog interface. Seeed Studio 101020023

Bluetooth audio receiver module enclosed in a housing that enables wireless transmission of sounds. It is equipped with a PCB antenna, microphone, 3.5 mm audio jack and control buttons

A volume sensor designed to detect loud ambient sounds. The module uses a microphone and LM2904 amplifier. The output value (analog signal) depends on the volume of the detected sound. In order to eliminate interference, the microphone signal is subjected to double filtering. Seeed studio 101020063

The module with a digital stereo audio amplifier is equipped with Bluetooth communication. The system allows you to connect two speakers with an impedance from 4 Ω to 8 Ω and a power of 15 W per channel

The TDA7498 audio amplifier module offers 2x100W power, enabling connection via Bluetooth, TF card and AUX. Powered by 12-24V DC, it is compatible with speakers with a resistance of 4 to 8Ω and is characterized by compact dimensions.

MEMS SPM1423 digital microphone module with PDM modulation. It communicates via the I2S interface. M5Stack U089

An audio module with a DAC converter designed to work with the Raspberry Pi. Supports I2S/DSD/Coaxial input, Analog/Coaxial/Optical/I2S output, and has 384K/32Bit decoding function. DFRobot DFR0941

Audio receiver with Bluetooth 4.2 module. It is powered by a microUSB connector and is equipped with 5 control buttons

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

Module with WM8960 audio decoder that allows you to operate 1 W stereo speakers and two microphones via the I2S interface. Adafruit 4757

The TDA7377 2x35W audio amplifier module is a compact device providing powerful stereo sound with a power of 70W (2x35W per channel). With a wide voltage range, a variety of speaker configurations and compact dimensions, it is an ideal solution for improving sound quality in a variety of audio applications.

Audio amplifier module with three output channels. It can be powered with the voltage from 18 to 24 VAC and has two outputs with a power of 100 W (left and right) and one with a power of 120 W (bass)