Heil Pro Set Media Pro Ham Radio Headphones with Boom Microphone, The Pro Set Media Pro has been designed for use with your computer for software-defined radio (SDR) in amateur radio applications. Based on Heil Sound’s popular Pro Set communications headset, the Pro Set Media Pro utilizes a high output electret microphone element designed specifically for the requirements of computer sound card inputs. The result is beautiful, broadcast-quality audio, with plug-and-play functionality. The Pro Set Media Pro earphones are acoustically tuned, and they incorporate Heil Sound’s exclusive phase reversal switch that creates a spatial widening effect that often makes incoming audio easier to understand. The earphone speakers in the Pro Set Series are 200-ohm devices, with a -3 dB point at 8000 Hz. This combination reduces a lot of the hiss found in receiver audio stages. The Heil Sound Pro Set Media Pro is terminated in two industry-standard 1/8″ male plugs: the Red plug connects to the “Microphone” input jack on your sound card, while the Black plug connects to the sound card’s audio output (“Headphone” or “Speaker” jack). The Media Pro ships with removable cotton earpad covers that can be washed. The vinyl earpads can also be removed, should they even need to be replaced. Each Pro Set is equipped with a windscreen for the microphone. The windscreen does not affect the frequency response of the microphone, and it is highly effective in minimizing breath blasts while you are speaking. Note: The Pro Set Media Pro will not work with amateur radio transceivers.