Serious Passive Preamp question


I have a Audio Research LS7 Line stage preamp and someone wants to trade me my AR LS7 for a serious passive preamp
Is anyone familiar with this company ?... I was told it retails for $2200.
 My  Amps are Class D wyred 4 sound mono blocks.
Opinions please.
rocky1313

Showing 1 response by milpai

@mrdecibel ,
I would agree with @cleeds . What is your passive preamp? Mine is a TVC as shown in my system page. I am thinking of a active tube just to try out in my system.