The VOID PRO RGB USB by Corsair is a 7.1 Surround channel gaming headset, which uses a 50mm driver. It uses a USB connection with a Cable Length 1.8m cable. This delivers a frequency response of 20Hz - 20 kHz and a sensitivity of 107dB (+/-3dB). It also has a Unidirectional noise cancelling microphone with a frequency response of 100Hz to 10kHz and a sensitivity of -38dB (+/-3dB).
The Cloud II by Hyper X is a 2 channel gaming headset, which uses a 53mm driver. It uses a single mini stereo jack plug (3.5 mm) connection with a 1m + 2m extension cable. This delivers a frequency response of 15Hz–25,000 Hz and a sensitivity of 98 +/- 3dB . It also has a Cardioid Condenser microphone with a frequency response of 50 - 18,000 Hz. And only weighs in at 350g.