When somebody else will buy a cp2100a, why not.
To be honest, I´ve played with the thoughts, buying the 2100a again and compare it to the b version.
Or trying to tear it down, especially the clamp, because there must be "more electronics" in it.
You can hear a relay switching, also the ammount of the leads coming from the clamp part are too less - Something must happen in the clamp part before...
Boy, imagine, this thing costs only 200/350 bucks...