Help on choosing a amp for Dali Helikon 400 mk1

I think you've got a lot of options Marcval. It would be hard to go wrong with the gear you've already got, IMHO.

I think the Dalis and BAT are considered to be somewhat warm sounding gear, as opposed to neutral or lean, so if you want to keep going in that direction you could try a Belles or McIntosh or Plinius amp, to name just a few.

If you want something leaner, faster, more neutral you could try Krell, Bryston, Pass Labs X-series or a bunch of others.

Or you could try a BAT amp. Many people feel you get a nice synergy going with a pre and amp from the same manufacturer. I'm sure Victor Khomenko at BAT tried to design them that way.

Then you have the opportunity to roll tubes in your preamp which you can do to further tune your sound. Do you already have some tubes, or is that too expensive for you to consider?

It's hard to say what would really click for you. Can you give us a little more info about what you've tried or what sound you're looking for?

Thank you for you're response Tomcy6
I would like to go in the more neutral/detail way.I did try some Nuforce ref v2se, it sounded very detail (good) but to bright on my system.

I will audition a BAT vk 220 as you mention.

I did not think about tube rolling. does it make a big difference on a pre?
I currently have 2 B&K st202 bi amp.

I have heard de Dali 400mkI a few times, the best amp driving the speakers I heard was the musical fidelity tri-vista 300. I know it is not an answer to the question.

I primarily listen to jazz and rock on vinyl. I am using a BAT VK-250 with BAT-PAK along with my BAT VK-31SE preamp into a pair of Aerial 7Bs and am very happy. You should be able to find this on audiogon at your price point. I have not auditioned the VK-220, but from what I read on the 10 Audio website, the VK-250SE is substantially better

I'm using a Nad M3 to power my 400 mk1's and am stunned by the results. I demo'd the 400's on some McIntosh amps (not sure of the models) and quite frankly the Nad ranks right up there.