Magico S5 MK II Speakers - amp/pre options


I am thinking about trading my Pass Labs X250.8 amp and Simaudio Moon Evolution P-8 Preamp

Luxman M-900u and C-900u combo

Any idea's with these speakers?

I was looking at new ARC REF 6 and used Pass Labs X350.8 but the dealer swears for same money he can get me this Luxman combo brand new and it will be much better? He has never mislead me in the past.

What do you guys think?

I will be using with brand new Magico S5 MK II that are being delivered this week. I don't listen real loud and also use Bricasti M1SE DAC and Kubala-Sosna Emotion/Elation Full Cable Loom.

Please anyone that knows or has an option please let me know your thoughts.
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