What is Audio Researches best preamp period

Tube or solid state from the oldest to the newest ref ser ,what is the best one they made or make.

bbaxley209-28-2005 9:58pm

pawlowski6132 Details Discussions Posts This discussion Message User 592 posts 09-29-2005 at 08:27pm Copy Comment URL Report Comment Edit Delete Why does it have to be ARC?? That doesn't make any sense.