code: function( bus, position ) {
      if( typeof bus === 'undefined' ) bus = Audio.Master
      
      if( this.destinations.indexOf( bus ) === -1 ){
        bus.addConnection( this, 1, position )
        if( position !== 0 ) {
          this.destinations.push( bus )
        }
      }
      
      return this
    }
docs: override for Gibber.Audio method to use master bus