ARC LS26 vs Ref 2 Mk 2

Hi all,

I am considering buying a tube preamp to replace my Krell KRC-HR. I tried out my friend's ARC LS5, and while impressed by it's dimensionality and inner detail, I found it to be a bit hazy compared to the Krell's inky black background.

I am considering either a brand new ARC LS26 or a used ARC Ref 2 Mk 2 for the same price. Home audition of the Ref 2 is not possible.

Could anyone with experience of both please share their opinions? Musicality is my number one priority.

Thanks in advance
Mick