Razer Nommo: Custom Woven Fiberglass 3" Drivers - Rear-Facing Bass Ports - Bass Knob w/Automatic Gain Control - Full Range 2.0 PC Gaming Speakers

Full Range 2.0 Gaming Speakers: Optimized drivers built for full range sound and extreme clarity Custom 3" Woven Glass Fiber Drivers: Producting a tighter sound with higher frequencies, allowing you to hear distinct layers and audio details Rear-Facing Bass Ports: Deliver increased bass output for a fuller, richer range of audio Bass Knob With Automatic Gain Control: Fine-tune the output perfectly-from ground-shaking bass to a low hum for late night sessions System Requirements: PC/Mac with a free USB port, razer synapse requirements: Windows7/Mac OS X 10.9 (or higher), internet connection: 100 MB of free hard disk space. Use with either 3.5mm jack or USB (Speaker will not work with both plugged in)