Gikfun 4Ohm 40mm Diameter 3W Full Range Audio Speaker Stereo Woofer Loudspeaker for Arduino (Pack of 2pcs) EK1794

Audio Amplifier Board, DROK 5W+5W Mini Amplifier Board PAM8406 DC 5V Digital Stereo Power Amp 2.0 Dual Channel Class D Amplify Module for Speaker Sound System DIY

Audio IC Development Tools Adafruit Mono 2.5W Class D Audio Amplifier - PAM8302 (1 piece)

Gikfun 2" 4Ohm 3W Full Range Audio Speaker Stereo Woofer Loudspeaker for Arduino (Pack of 2pcs) EK1725

HiLetgo 5pcs PAM8403 23W Mini Digital Power Amplifier Board AMP Class D 2.5-5V Input

5PCS 200 Times Gain 5V-12V LM386 Audio Amplifier Module for Arduino EK1236

CQRobot Speaker 3 Watt 8 Ohm for Arduino, JST-PH2.0 Interface. It is Ideal for a Variety of Small Electronic Projects.

Icstation Bluetooth Receiver Board BT 5.0 Stereo Audio Amplifier 2x5W Mini Power Amp Module 3.7-5V for DIY Wireless Speaker

Super Mini PAM8403 DC 5V 2 Channel USB Digital Audio Amplifier Board Module 2 3W Volume Control with Potentionmeter Switch Pack of 2

Adafruit Audio FX Mini Sound Board - WAV/OGG Trigger 16MB Flash [ADA2341]

Bluetooth Board, DROK Audio Receiver Bluetooth Module DC 5V-35V Portable Wireless Electronics Stereo Music Receive Circuit Chip with Micro USB Port for Headphone Speaker Home Sound System DIY