Bi-amping w/multi-channel amp...

I am currently using a Musical Fidelity A3cr pre-amp with a Harman/Kardon Signature 2.1 5 channel amp running Monitor Audio Silver 5i's. My speakers accomodate bi-amping but I am only using 2 channels at the moment. I would like to try bi-amping to see if I get any improvements as I have recently moved the system into a larger room.

What is the best way to achieve this, split the interconnects out of the pre-amp? Who makes splitters or interconnects for this?

Thanks for the help
I suggest you split the interconnect at the amp side and save youself an extra interconnect. You can buy a female to 2 males Y-adapter cable from local Radio Shack or from online stores like Audio Advisor.
Thanks. Just wondering why there is never too much mention of this. I found some splitters at a local car stereo shop for $10.00. People spend hundreds on interconnects and then split them with $10 splitters!?