There are some advantages to biwiring rather than using single speaker cables. I use Linn equipment which is intended to be upgraded in this manner and I did notice some improvements going to biwires. However, with other brands, reports from other Audiogoners in other threads indicate that it is very system dependent. You should try to borrow cables from a friend or a store to see if it makes a difference in your system. If it does work for you, it can be a relatively cheap upgrade if the cables are modestly priced.
