Audio Note Soro SE Uh Cool

Well it's been almost twenty four hours since i brought her home from the local audio kennel. Definitely a keeper. Perhaps either Philjolet or C123666 can answer this question, what, or, more simply, how do i use a stepup with the onboard phono stage? I have a shelter 501mkII going through a Phenomenon into the AUX input at the moment. Have you guys used a stepup before? Hell, i guess anybody can jump in on this one.

Thanks guys,
I'm going to pay for the soro today, hopefully with a little trade in to boot. I'm looking at the Bent Mu stepup, looks like it would be the the most versatile. Why would I need a new Phono cable? Looks to me like the Mu's could be placed close enough together to accept my cardas cable.
And yes the Soro is an integrated p2SE.

I think this piece is a little newer as it has all the inputs on the back, also it has already been upgraded to the metal binding posts. Thanks for your input, really. But i must admit I'm still a little confused. Does the K&k step up offer any cartridge loading, in ohms, or is it left up to the soro to sort it out? Also what would be considered an active step up, or how is that determined? Sorry if i sound dumb but this really is rather new to me.
Oh and Happy New Year!