R-K DDV Series, 1/4 " PVC Diaphragm Air Valve, 25-80PSIG Acuating Pressure, Normally Closed, 10-100PSIG FNPT

Anker PowerCore Lite 10000mAh, USB-C Input (Only), High Capacity Portable Charger, Slim and Light External Battery for iPhone, Samsung Galaxy, and More

CQRobot Miniature Loudspeaker 3 Watt 4 Ohm Passive Enclosed Audio/Woofer Speaker Compatible with Arduino Board. JST-PH 2.0 mm 2-Pin Interface, for a Variety of Small DIY Electronic Projects.

60W Voice Playback Module, PEMENOL DC 9-24V High Power Music Player Mp3 Trigger Amplifier 64Mbit Flash Storage Sound Board Support Sound and Light Alarm Present Electronics DIY

MiOYOOW DIY Bluetooth-Compatible Speaker Kit with FṂ Radio, Electronic Soldering Practice Kit USB Mini Home Sound Amplifier DIY Kit with Digital Display and Colorful LED Lights for School STEM Project

Pyle Mini Phono Turntable Preamp - Stereo Preamplifier with RCA Input/Output - Low Noise - Powered by 12V DC Adapter - Ideal for Vinyl & Phonographs - PP777

MiOYOOW Spectrum DIY Bluetooth-Compatible Speaker Kit, SMD Soldering Practice Kit Mini USB Home Sound Stereo Amplifier Kit DIY Soldering Electronic Projects for Home Office Use and School Education

ARRAROWN ZK-1002T PRO 2.0 Channel Bluetooth 5.0 Amplifier Board 200W HiFi Subwoofer Audio AMP with Treble and Bass, BT USB and AUX Inputs, DC 12-24V 2.0 Channel Stereo AMP Module for DIY Speakers

Fosi Audio BT20A Pro Bluetooth 5.0 Amplifier, 300W x2 Wireless Amp, TPA3255 2 Channel Mini Class D Integrated Home Audio Outdoor Stereo Receiver with Bass Treble Control for Passive Speakers