Dynamic EQ, microphone frequency response 100 Hz–10 kHz optimal for PC wideband voice telephony (up to 6,800 Hz), hi-fi stereo (C3220/ C3225). Receive output from 20 Hz–20 kHz, enhanced digital signal processing (DSP), noise-canceling microphone, adjustable audio alerts with Plantronics Hub software (mute/volume)* Users transitioning to PC telephony for webinars, conference calls, music, and other multimedia applications This USB-A compatible headset offers a plug-and-play design, meaning it is easy to set up and use right away without any complicated software installation requirements. Moreover, it includes an in-line call controller with an answer/end button and volume controls that provide easy access to call management features.