Choose the OnAir Controllers hush and hush+ to manage your OnAir signaling. Both perfectly fit any m!ka Mic Arm with OnAir indicator. Plug'n'play the mic arm's XLR-5 to let m!ka's dual-color LED OnAir indicator signalize that you are OnAir. On top of redlight control, hush+ gives you power over your mic signal and mute. Its integrated preamp delivers up to 75dB gain.