Krell Preamp function?


For Krell Showcase, HTS and S1000 surround processors, they all have Preamp (button) function, what is the difference between these models?
From their manual description, they all bypass digital circuit. But HTS's brochure had emphasized its analog throughput ability. So I am confused here.
If I want to purchase a system recently, which one has the best "audio" C/P right now? Second hand HTS+TAS, or S1000+S1500?
I am using Atlantic Technology System 450 THX + Pioneer AX5-AIG right now.
(I will conside adding a tube pre-amp for my stereo system.)
Thanks for your suggestion.
people

Showing 1 response by rcandpc

Since you want the best 2 channel performance possible you should consider the Krell KAV2250 for L & R and then depending on your budget a 3 channel amp for center & surrounds. The S1500 is a great amp for the money but in a 2 channel scenario the extra power from the KAV2250 will be worth every penny. If you were more theater than 2 channel then I would say the S1500 would be more than enough amp.