GamesterGear USB Gaming Headset with Microphone, Stereo Headphones for PC built-in Bass Quake, OG-AUD63090 BASSQUAKE: A rumbling effect produced by the audio drivers, while playing the user will feel as if they are in the midst of all the action. The BASSQUAKE effect is a result of engineering the 50mm and 30mm dual drivers in each ear cup to produce a force-feedback which in turn creates the rumbling feeling USB PLUG AND PLAY: The PC210-I is simple to use, just plugging into the USB port will deliver high-quality audio. The USB connection also powers the internal amplifier which will deliver superior resolution and detail, allowing the user to hear sounds they haven't noticed before FLOATING EAR CUPS: The floating ear cups are designed to conform to the shape and angle of the user's ears, thereby increasing comfort during extended periods of use. In addition, the ear cups are detachable so that they can be hand washed EXTERNAL AUDIO CONTROL: Includes an external audio volume control for quick and convenient adjustment Freq. Res: 20z to 20khz; Connector Type: USB 2.0 Plug; Cable Length: 3.9 Ft (1.2m); Drivers: 50mm at 32 ohms , Bass Driver: 30mm at 8 ohms