Astro A40
The A40 headset by Astro is a true gamer's headset and boasts an impressive list of specifications. The headset was designed from the get-go to be used for gaming and has a very comfortable and sturdy design that is perfect for long gaming sessions. Audio and voice chat quality through the A40 headset is very good. With the included mixer, you can adjust the chat audio and gaming sounds independently to levels that suit you. The A40 headset also supports surround sound, which means you will be able to hear positional sounds in games that support it. Purchase the Astro A40 as a bundle with the mixamp in order to make use of all of its audio mixing features as these two items can also be purchased separately. A special Metal Gear Solid 4 edition of the headset has been released and is themed with a faceplate featuring this PS3 game, but standard versions are also available. The Astro A40 audio system has received a rating of 9.5 out of 10 on IGN making it an incredible product and one of the best gaming headsets available for PS3.



Headphones Type: Headphones - Binaural
Headphones Form Factor: Ear-cup
Headphones Technology: Dynamic
Connectivity Technology: Wired
Sound Output Mode: Stereo
Response Bandwidth: 15 - 28000 Hz
Sensitivity: 104 dB
Impedance:50 Ohm
In-Cord Volume Control: Yes

Microphone Type: Detachable - Boom
Microphone Operation Mode: Uni-directional

Connector Type:
1 x Headphones ( Mini-phone stereo 3.5 mm ),
1 x Microphone ( Mini-phone 3.5 mm )

Miscellaneous:

Cables Included
1 x Headset cable,
1 x Audio adapter
Included Accessories
External A40 MixAmp,
Audio cable

source: http://www.ehow.com/list_6909010_gaming-headsets-ps3.html