The MH752 by CoolerMaster is a Virtual 7.1 channel gaming headset, which uses a 40mm, Neodymium driver. It uses a 3.5mm 4-pole jack / USB Type A connection with a 1.5m 3.5mm, 1.5m USB cable. This delivers a frequency response of 20 - 20,000Hz and a sensitivity of 97dB +/- 3 dB. It also has an Omni-directional, Detachable microphone with a frequency response of 100 - 10,000Hz and sensitivity of -42 +/- 3dB. And only weighs in at 340g (inc cable).
Kraken X
The Kraken X by Razer is a 7.1 Surround Sound channel gaming headset, which uses a 40 mm, Neodymium driver. It uses a 3.5 mm connection with a 1.3 m cable. This delivers a frequency response of 12 Hz - 28 kHz and a sensitivity of 109 dB. It also has a Unidirectional ECM boom microphone with a frequency response of 100 Hz - 10 kHz and a sensitivity of -45 +/- 3 dB. And only weighs in at 250g.