Help on choosing a amp for Dali Helikon 400 mk1

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.

thank you for you're response.
witch one of you listen to detail not to bright sound with some warmth.
does that make sense?you know like listening to Coltrane, Mingus or Nina Simone and feel like you are they're.