a research or krell pre amp for krell ksa-150 amp?


i am looking to buy a pre amp for my krell KSA-150. i have been planning on buying a krell used in the $800.00 price range. i noticed AR were signifigantly less expensive and from what i have read, seem to pair well with krell amps. is there a pre amp that is known for this combo? i listen to all kinds of music from jazz,R&B to rock. i definately need slam but i also want warmth and detail. what is the best way to accomplish this?

please advise
drum75
Drrdiamond, so what are you trying to say, his ksa-150 is an old piece of crap. He asked about a pre to use with his ksa-150 and you tell him all the newer krells just blow the doors off his. For one thing that is not true at all, as a matter of fact the old ksa-150 sounds much better than many a krell that came after it. As a matter of fact, most of the reason that krell got a bad rep. for being brite and lifeless came from the amps that came after his ksa-150. The new krell line sound very good and its about time because none of the krells made between the ksa-150 and the new line will smoke his.
Drrdiamond, when i become more wealthy...i will buy a new one. till then i have to make this one sound good.

thanks
Just to explain my self on MY opinion:

When I was upgrading from my KST100, I compared the KSA150 to the KSA250. My vote went to the 250, not for the power, but that it sounded less grainy. At the time, I was using one amp to drive double Cello Amatis. I later changed to the B&W800's.

It was on the B&W800's that I personally compared the KSA250 to the KSA300S to the FPB300.

With the aid of the Krell KBX active x-over, I now use the KSA300S for my bass and the FPB300 for the mid/highs on my actively biamped B&W800's.

I am not suggesting that "drum" should scrap his amp, but I would suggest not spending large amounts of money on the preamp, because the improvement would be more significant if spent on the amp.

Richard