Some more info would be helpful. What preamp are you using now, and what aspects of sound reproduction are most important to you and what specifically are you looking to improve upon over what you have now? Until we know these things, as Zd alluded to, you'll just get people's personal preferences which likely have nothing to do with what you may be looking for. And budget would be helpful too. Basically, the more info you give us the better and more useful recommendations you'll get here.
