First Sound Presence mk11 vs Audio Research L.S.25

No I do not have a audiable hiss, but exposure to different equipment will reveal small differences in noise, etc that we grow use to. The A.R.C. L.S.25 I have had for a while, is a very nice line stage. Now for something different. The audiogon members who own these pre's seem to love them. Hopefully so will I!!
Yes I am giving uo balanced outs but It is a very short run to my power amp and none of my source equipment uses them at this point.

I can't directly comment on the LS 25 versus the Presence Deluxe Mk II, however I have owned the ARC LS15 in the past and currently own the Presence Deluxe Mk II. I would not consider looking back at all, balanced or not. The First Sound Presence Deluxe Mk II bested the ARC LS15 in all areas, IMHO... Keep us posted how it works out for you.

I'd go with the First Sound. It is a very good sounding pre-amp, designed by Paul at TRL. If the TRL wasn't available, the First Sound would be my next choice.

Best wishes,
Jack

The FS is dead quiet (not a hint of tube rush or hum with gain up to 1:30 using a low output MC cart, step-up and tube phono stage) in my system and remarkably clear, detailed w/o being etched or analytical. I have not heard an LS 25.