Designed to meet the exacting standards of world class contest and DX operators, Heil Sound Set Pro Series is the best selling microphone / headset.
Heil Sound Pro Set microphone is lightweight, versatile headset designed for comfort, durability, and above all, performance. The full-size headphones are far foam padding for comfort of the operator in long run.'s Ear cushion covers are removable for washing and replacement pads are also available. In addition to sealing the noise passively, the Pro Set Heil Sound now includes exclusive phase reversal technology, which allows users to "move" the input signal with the participation of the investment phase switch, creating a unique sound spatial expansion can, in some situations, significantly improve a hard copy DX pileup. Headset speakers Pro Set Series are devices of 200 ohms, with a -3 dB point at 8000 Hz This combination greatly reduces the whistle found in the receiver audio stages. These speakers average sensitivity, but are easily driven by most platforms if you turn the AF gain control to about two. | 
HEIL SOUND-4-AD1KM PROSET Micro headset for HEIL PRO-SET-4 AD-1KM FS-2 for Kenwood TS480 