Line 6 Helix Control Floor-Based Controller for Helix Rack Guitar Processor French Horns It has an "On Air"

It has an "On Air" indicator that can be wired for external activation from your console via the "Channel On/Mute" function

Humes & Berg 132 Trumpet Manny Klein Practice Mute

Direct Sound (Windows XP)

Funky Tom 1:

Line 6 Helix Control Floor-Based Controller for Helix Rack Guitar Processor French Horns It has an "On Air"Helix Control Floor Based Controller for Helix Rack Guitar Processor Speed up your editing with the optional Helix Control Helix Rack can be controlled by almost any MIDI capable device, but adding Helix Control gives you the same functionality as the floor based Helix, opening up a new world of creativity. With Helix Control connected over a single cable, Rack users can select a block for editing by touching a footswitch, create custom labels for the