[MrFabulous]

The Zalman Dual Output 5.1Ch Headphone Amplifier is compatible with Home Theater Systems (AV Amplifiers) and Home Game Consoles supporting multi-channel audio. It is also compatible with 5.1 channel desk-top PC soundcards

Features include dual outputs for two users plus independent volume control for each user and front left/right, rear left/right and center/sub woofer inputs and outputs.
5.1 Channel Headphone Amplifier ZM-RSA

The Zalman Dual Output 5.1Ch Headphone Amplifier also includes sub woofer channel support, making it compatible with Zalman’s Real Surround-Sound Headphones.

http://www.quietpc.com/gb-en-gbp/pro...roducts/zm-rsa