Will it ever end? Another range of new LED ‘cans’! This time the technology has brought us another breakthrough.. The COB parcan .. tadaahh! What the $&^% is COB do you ask? Well, it’s an abbreviated term for Chips On Board, where multiple LED chips are assembled together to make one giant LED light source. So these cans have ONE single 100W RGB LED in the middle instead of the multiple LED’s that you .