iHome's new headphones become speakers  HeadphonesUsually, you
have to choose between headphones and speakers. After all,
they're two different devices with two different purposes. iHome
is trying to change that with the new iHMP5 Dual Mode
Headphones. These over-the-ear headphones convert into portable
speakers simply by clicking the ear cups together.  When you
want to share your music with those around you, just take off
the headphones, turn the ear cups sideways, and connect them via
a small clip in the sides. The headphones automatically crank up
the output and become a set of portable speakers.  It's a unique
idea, but I'm skeptical as to how they can be effective as much
more than an audio novelty. Since the headphones use the same
50mm drivers in both headphone and speaker mode, there are
probably some major acoustic concerns. If they're built to be
good headphones, the driver placement and power output, even
cranked up, won't be optimal for speakers. If they're built to
be good speakers, then turned