Also the Headphones are going to be used for Gaming, Music and Video   And how much of a difference would i notice from my current Razer Gaming Headset  

Hi guys I'm new here I'm really into Computers but bit of a Noob as Audiophile Headphones and Amps   I've ordered myself some Sennheiser HD600 with the Filio E17   I was then told afterwards by a friend that i don't need the E17 as i have a Soundcard   My Pc setup is as follows  ...