Amazon.com: BOSS Audio Systems PT1000 2 Channel Car Amplifier - 1000 Watts, Full Range, Class A/B, 2-8 Ohm Stable, Mosfet Power Supply, Bridgeable : Electronics
Amazon.com: PRV AUDIO 4 Inch Midrange Speaker 4MR60-4, 60 Watts Program Power, 4 Ohm, 30 Watts RMS Power Pro Audio Loudspeaker (Single) : Electronics
ERH INDIA Mini Digital Stereo Amplifier Board with 2 Speakers of 3 Watt 4 Ohm : Amazon.in: Electronics
BOJACK 220 Ohm Resistors 1/4 W ±5% Carbon Film Single Resistor (Pack of 200 pcs): Amazon.com: Industrial & Scientific
Volt/Amp/Watt/Ohm - Calculator:Amazon.com:Appstore for Android
EDGELEC 100pcs 1 ohm Resistor 1/2w (0.5Watt) ±1% Tolerance Metal Film Fixed Resistor, Multiple Values of Resistance Optional: Amazon.com: Industrial & Scientific
Amazon.com: Car Two Way Speaker System - Pro 4 Inch 140 Watt 4 Ohm Mid Tweeter Component Audio Sound Coaxial Speakers For Car Stereo w/ 20 Oz Magnet, 1.85” Mount Depth Fits