Microphone preamp with AD828 chip

Class D stereo sound amplifier based on the Texas Instruments TPA2016D2 circuit. It can work with 4 Ω speakers with power up to 2.8 W or 8 Ω with power up to 1.7 W in stereo mode. SparkFun DEV-20690

The LM4950 audio power amplifier module with a power of 3 W per channel, powered by 10-15 VDC, equipped with a 3.5 mm Jack socket for audio input and screw connections for loudspeaker outputs, is equipped with thermal and short-circuit protection. It provides good sound quality with low energy consumption, making it ideal for small audio systems

A stereo tube preamplifier based on 6K4 tubes. Designed for use with active speakers or an additional amplifier and passive speakers. SUCA-AUDIO TUBE-T1

Audio amplifier module with three output channels. It can be powered with the voltage from 12 to 24 V and has two outputs with a power of 50 W (left and right) and one with a power of 100 W (bass)

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 2 to 8 Ω. Powered with DC voltage from 12 to 24 V. Fosi Audio BT20A

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 amplifier with a power of 40 W (2 x 20 W) powered with the voltage of 12 V. Equipped with an audio input in the form of two chinch sockets and an audio jack 3.5 mm input

Class D PAM8410 class D stereo digital audio amplifier. The system allows you to connect two speakers with an impedance from 4 to 8 Ω and a power of 15 W per channel

Audio preamplifier based on NE5532 chips. Equipped with an input selector function. Display and remote control included

Class D mono digital audio amplifier module PAM8302. The system allows you to connect one loudspeaker with an impedance from 4 to 8 Ω and a power of 2.5 W

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

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

HiFi stereo tube amplifier based on 6J1 and 6P1 tubes. Designed for use with loudspeakers up to 3 W and an impedance of 4 Ω or 8 Ω

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 Class D digital audio amplifier module has two channels with a power of 30 W and can work with speakers from 4 to 8 Ω. Powered with the voltage ranging from 8 to 26 V. Bluetooth communication