In article 2eDLb.6855$Rc4.27241@attbi_s54, Newps
wrote:

Perhaps because DC isn't selling headsets anymore. Lightspeed can't
seem to make 'em fast enough. They come out with new products on a
regular basis. DC's last new product was taking the 13.4 and putting
the ANR technology in it.

Giggle, giggle!!!
Let's see... Lightspeed sells you a product for $500.
Within the first year, you have to call them three or four times and
install "free" replacement parts.
Then, they come out with a "new" model.
During your second year of ownership, you again call them for
replacement parts. This time, they tell you, "For just $300 more, you
can obtain our new headset for the upgrade price.
This pattern repeats itself.
It's the MicroSoft money machine business model!
If you choose the upgrade path only once, they already have you for the
price of three DC headsets.