Originally Posted by lhendrik
It is not an upgrade. it is another version of their product, which is available in several configurations to fit your needs. A fixed boom mike, unattached mike, Speakers or earbuds. You choose. Get the one you need.
Just found it and it is a 35 dollar or so additional piece for the ear-bud option. You have to buy the base unit and then add the other piece. No biggie. At least the offer it and you don't have to rewire it like the Scala