Optical converter to 2xRCA

Module with the PAM8904 controller designed specifically to control piezoelectric elements. The amplifier operates over a wide frequency range, up to 300 kHz, and allows for gain up to approximately 13 Vpp. Adafruit 5791

Module with active low-pass filter. Dedicated to the bass column (subwoofer)

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

Stereo audio amplifier with Bluetooth 5.0 communication. It can be powered with the voltage from 5 to 24 V and has two outputs with a power of 50 W. Assembly kit. ZK-502L

A high quality 25mm diameter aluminum cartridge capacitor. It offers excellent sensitivity and a wide frequency range, ideal for studio and recording applications.

Class D digital audio amplifier with Bluetooth 5.0 module. It has two channels with a power of 300 W and can work with 4 Ω speakers. Powered by alternating voltage 230 V

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

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 16 Ω. It is powered with the voltage ranging from 9 to 24 V.

Speech recognition module with Nuvoton ISD9160 system, microphone, Flash memory and speaker output. The board is equipped with a Grove connector and communicates via the UART interface. Seeed Studio 101020232

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

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

MP3 panel with LCD display for installation in the audio device. It allows you to play files in MP3, WAV and WMA format from USB memory, SD card, via AUX and Bluetooth 5.0. Has a built-in FM receiver. modBluAud

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

Zeenko ZK04-UM is a compact low-noise RF amplifier operating in the 100 kHz – 4 GHz range, powered via USB-C, featuring high linearity and low noise levels. Ideal for amplifying antenna signals or as a preamplifier for spectrum analyzers such as the tinySA ULTRA, especially above 3.5 GHz.

Adafruit 2342

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