Amplifier Board, DROK Audio Amplify Module Dual Channel 30W+30W TDA7377 pro2 DC 9-18V 12V Class AB Immersion Gold Car Automotive Stereo Speaker Amp Board with Knob and Shielded Cable

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

DROK TDA7297 15W+15W Audio Power Amplifier Module AC/DC 9-18V 2.0 Dual Channel Stereo Amp Board, DIY Sound System Component

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

Bluetooth Receive Module, DROK Portable Bluetooth Audio Stereo Receiver Board AS1711BT DC 5-35V Wireless Electronics Bluetooth Module Chip for DIY Headphone Home Stereo

12V Amplifier Board, DROK 15W+15W 2.0 Dual Channel Audio Amplifier Board PAM8620 DC 8-26V 24V Digital Stereo Amp Module Class D Mini Power Amplify Circuit for Sound System Speaker DIY

Amplifier Board, DROK TPA3116 HiFi Dual-Channel Stereo Audio Amplifier Subwoofer DC 10-25V Digital 2.0 Amp Module 25W+25W Output with Volume Knob

5v Regulator, DROK 5pcs Mini Voltage Reducer DC 4.5-24V 12V 24V Step Down to 5V Buck Converter Board 3A Volt Step-Down Transformer Power Supply Module

Power Supply 5V 3A with Switch UL 2.5A 2A 1.5A 1A Fast Rapid Charge AC Adapter w/ 1.5m Extra Long On Off Power Switch Micro USB Cable for Raspberry Pi 3 Model B/B+ Plus

WINGONEER NE5532 Stereo Pre-amp Preamplifier Tone Board Audio 4 Channels Amplifier Board

AOSHIKE 2pcs 4 Inch DIY Bass Speaker Loudspeaker Vibrating Membrane Passive Bass Woofer Diaphragm Plate,Speaker Passive Radiator Replacement Kit