Something to keep in mind. Star quad has 1.5 times the capacitance as a twisted pair (thanks to Occam for that info) which itself has more capacitance than untwisted pair. Do I need to mention that braided cables, such as the CAT5 DIY cables have an ungodly amount of capacitance? IIRC though, twisted cables have less inductance than non-twisted as well as offer RFI rejection. So there are trade offs to be had. I guess a lot depends on what the output stage of your amp can handle.