Computer Speaker with Subwoofer, USB-Powered 2.1 Stereo Multimedia Speakers System with RGB LED Light 3.5mm Audio Input Great for Music,Movies,Gaming,PC,Laptop,Tablet,Desktop - Newegg.com
DIY 2.1 Class AB Hi-Fi Audio Amplifier - Under $5 : 10 Steps (with Pictures) - Instructables
Stereo 2.1W Class D Audio Amplifier - TPA2012 : ID 1552 : $9.95 : Adafruit Industries, Unique & fun DIY electronics and kits
beFree Sound 3-Speaker 120-Watt Gray 2.1 Home Theater Speaker System in the Home Theater Speaker Systems department at Lowes.com
beFree Sound 2.1 Channel Bluetooth Multimedia Wired Speaker Shelf Ster – Global Abundance
Mini 2.1 Channel Bluetooth Stereo Audio Amplifier Receiver Home/ Car/ Marine Amp | eBay
CG23 2.1 Stereo Speaker System - RSL Speakers
Mini HiFi Stereo 2.1 Channel Audio Amplifier for Home/Car/Marine Subwoofer Amp | eBay
Mini HiFi 2.1 Channel Digital Power Amplifier Class D Stereo Audio Subwoofer Amp | eBay
12v 400 Watt 2.1channel Car Audio Stereo Amplifier Speaker Power Class A/ B F1 for sale online | eBay
Nobsound Bluetooth HiFi 2.1 Channel Power Amplifier Subwoofer Stereo Audio Amp | eBay
Amazon.com: Cyber Acoustics 62W 2.1 Stereo Speaker with Subwoofer - Great for multimedia laptop or PC computers - perfect for Music, Movies, and Gaming (CA-3610),Black : Electronics
BEFREE SOUND 2.1-Channel Bluetooth Multimedia Wired Speaker Stereo Shelf System 985106069M - The Home Depot
Stereo Speakers 2.1 with Subwoofer | Ewent
Fosi Audio BT30D Bluetooth 5.0 Stereo Audio Receiver Amplifier 2.1 Channel Mini Hi-Fi Class D Integrated Amp 50 Watt x2+100 Wat