I might look for some folks using your amp to answer that question as I've found matching the pre to the amp is a very important, make or break kind of synergy. A poor match can make a system you want to walk away from rather than listen to. That said I do love my Cary SLP50a which is a stone simple line stage. I also have had wonderful results with George Wright's pre amp of recent. If you are not into the image/cosmetics-thing, his stuff offers tremendous bang-for-buck. Like Quicksilver/Mike Sanders he is one of the best kept secrets in the high end. If you just need a line stage I'd consider his WLA12. I've had an ARC LS2B which was modified by GNS which I also liked very much. It was a more analytical kind of sound, but I thought it a great pre with push/pull amps. I have no recent experience with SS to speak of, and none with the Parasound. You may consider purchasing on the used market and a fair price and reselling if synergy is not good. This way you can try out many posibillities.
Good luck!
Marco
Good luck!
Marco