Class A 10W power amplifier (IRF330)

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

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

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.

50 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. Fwaeh FH-103

TDA2030A mono digital audio amplifier module. The system allows you to connect one loudspeaker with an impedance from 4 to 8 Ω and a power of 18 W

Module dedicated to audio preamplifier with DIP8 socket for NE5532, OPA2134, OPA2604, or AD826 chips, without passive components.

Audio amplifier module with three output channels. It can be powered with the voltage from 12 to 18 V and has two outputs with a power of 10 W (left and right) and one with a power of 20 W (bass)

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

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 of a stereo 24-bit audio converter with I2S interface (TS4657).

The board has a class D amplifier onboard that can drive 2 channels of 4-8 ohm impedance speakers at 20W each. Adafruit 1752

Class A power amplifier with one channel (mono) with the power of 10 W. Built on the popular design of J. Hood from 1969.

Class D mono audio amplifier module with MAX98357 chip. It can work with a 4 to 8 Ω loudspeaker with a power of up to 3 W and communicates via the I2S interface. modMAX98357

Stereo audio amplifier based on the TDA7492 chip. It can be powered with the voltage from 10 to 26 V and has two outputs with a power of 50 W

The 2x40W Bluetooth amplifier module XY-P40W is a versatile audio amplifier with a wide voltage range and Bluetooth 5.0 compatibility, enabling wireless audio transmission at a distance of up to 15 meters. It has protective mechanisms that make it not only a powerful but also a safe tool for designing your own audio devices.

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