OCIA.net has posted a review of the Zalman 5.1 Channel Headphone Amplifier. Below is a direct quote from the review:
"Gaming was stellar to say the least. I didn’t notice any difference in Quake 3, mostly due to its aging sound engine in sure, but Battlefield and Call of Duty where unbelievable. I was able to hear people creeping up behind me in both of the latter mentioned games. This was especially useful when piloting a jet in Desert Combat. I could locate, with extreme precision, where the plane was on my tail. This helped me to outmaneuver them and ultimately increase my kill to death ratio."
Direct Link: ocia.net
"Gaming was stellar to say the least. I didn’t notice any difference in Quake 3, mostly due to its aging sound engine in sure, but Battlefield and Call of Duty where unbelievable. I was able to hear people creeping up behind me in both of the latter mentioned games. This was especially useful when piloting a jet in Desert Combat. I could locate, with extreme precision, where the plane was on my tail. This helped me to outmaneuver them and ultimately increase my kill to death ratio."
Direct Link: ocia.net