What preamp are you currently using? I'm currently using a BP 6 preamp and it's excellent but I don't think any Bryston pre will do anything to reign in those Dali tweets unless your current pre is overemphasizing the treble range already.
I like the Audio Research suggestion for tubes if they're in your price range, but if you're still entertaining solid state I'd recommend a Marsh P2000b. Detailed but refined treble and will let more tonal color and emotion through than a lot of other solid state preamps. I had mine paired up with a Bryston 2BSST for a demo and it was a very nice match. They occasionally show up used here in the $600 - $700 range.
Best of luck.
I like the Audio Research suggestion for tubes if they're in your price range, but if you're still entertaining solid state I'd recommend a Marsh P2000b. Detailed but refined treble and will let more tonal color and emotion through than a lot of other solid state preamps. I had mine paired up with a Bryston 2BSST for a demo and it was a very nice match. They occasionally show up used here in the $600 - $700 range.
Best of luck.