Need a quality Y-adapter for bi-amping

Where I can I find a quality Y-adpater to use for bi-amping? My pre-amp only has one set of outputs. Looking for something alot better than some inexpensive Monster cable thing.

Is it better to get a Y-adpater that I would fit my existing interconncet into, or is it better to just have new interconnects made that start with one connection and split immediately into 2 interconnects? Like a one meter long y interconnect (rather than an adapter). I hope I'm being clear.
Any help or suggestions would be appreciated.

Thanks.