[Michael M]

Here are the specs of the 200:

Speaker Type: Single, high performance, UE-Designed, dynamic speaker
Input Sensitivity: 104 dB SPL/mW. 1kHz
Impedance: 16 Ohms
Cable length: 46 inches
Input Connector: 1/8 Inch (3.5 mm) gold plated
Frequency Response: 20 Hz – 13,000 Hz
Noise Isolation: 16dB
and for the 200V: Microphone Sensitivity: -40dBV / Pa at 1kHz (omni-directional)

I will post my review when I have some time to spend with them, from what my understanding is they are an updated and improved version of the original with the additional of the 100 & 150.