I am looking into recording video game footage and audio with post-production commentary but I use headphones that do not come included with in-line volume control. I currently have my Windows volume set up at 4% so that I do not kill my ears but when recording this comes out too low. I am looking to be able to have my Windows volume at a high enough level so that the audio could be heard while I am playing and recording without making me deaf.
From what I have gathered, an amp would be suited for this. I am simply looking to do this as a hobby and to get familiar with the Adobe products so I am looking at a price range between $50-$225. Exceptions will be considered but I will probably not invest in anything more than $300.
Edit: To clarify I am looking for an interface that provides independent volume controls and as mtkversion said, a mixer is probably what I'm looking for. Also added my current microphone below.
Audio card: ASUS Essence STX
Headphones: Audio Technica M50
Microphone: Samson C01U
Motherboard: ASUS P8P67 PRO
Audio recording: Adobe Audition CS6
Operating system: Windows 7 64-bit
Video recording: Fraps (I am not recording audio through this)
Edited by Ushinro - 9/7/12 at 6:30am