Dual RCA jack and a 3.5 mm jack let you easily connect your Logitech® Squeezebox™ network music player, gaming console, DVD player or iPod®.
That's very interesting. You went from T40's to the Z523's. How on earth can the Z523's sound better? Think about it. For one, they are cheaper, and also you have the cost of the subwoofer to consider. Meaning the satellites of the Z523's are going to be cheap in comparison to the T40's. I suppose, the T40's could be hideously over priced.
ive seen a lot of people spec this Acoustic Energy Aego M 2.1's set and i was thinking of getting them before my z523's.
might have to do a bit more research on these now.