It worked using this cable to send the single stereo signal from your computer audio board to your stereo amplifier and also to the compressor to amplifier.

3.5mm Stereo Audio Interface Cables extend the distance of your existing 3.5mm audio cables. 3.5mm Audio Cables are used to connect the 3.5mm jack from CD players, stereos, speakers, PC/TV tuners and other audio devices. Enjoy the lasting quality and performance with its shielded design and molded connectors. Extend your audio cables or make AUX line-in ports more accessible
The High-Fidelity 3.5mm AUX Audio Extension Cable is great for extending AUX line-in port access for hard-to-reach system set ups. Combine it with your favorite pair of headphones to add length for more comfort & slack!

Features:
Connectors:Nickel plated or gold stereo connectors maintain signal fidelity for high-quality audio reproduction.
Fully modeled connectors provide excellent strain relief 
Shielded to prevent unwanted EMI/RFI interference 
Use: Extends the distance of your existing 3.5mm Audio Cable 
Designed for: CD players, stereos, speakers, PC/TV tuners and other audio devices.

Specs:

3.5mm stereo Plug to 3.5mm stereo Plug
Pefect Connecting your Ipod or Mobile Phone to an Aux Input
Heavy Half-metal colour coded Plug
Shiny pearl gray PVC for Better Looking
High-Purity Oxygen Free Copper conductor
High-Density foil and Tinned Copper shielding for max rejection of EMI and RFI
ROHS standard rated
Length : 15cm, 6" long