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
While I suspect that in your system’s case an active pre is a better fit, the answer seems obvious to me: try it first! Why not swap for a few days and see what you think? VERY happy passive user here (high power tube monos, very high gain tube phono stage)
I'd never owned a passive preamp until the Schiit Freya came along...the passive option is interesting, but the tube stage has the gain my single ended amp needs. The output switching feature in this preamp seems most useful (to me anyway) as a way to see what the tubes are doing...
ozzy62
  If your system is passive friendly, an active preamp is only going to color the sound further.  Now if this coloration is pleasant to you, you are golden. But I am of the mind that you are fixing something upstream that you don't like.
+1 ozzy62
I don’t believe ANY active preamp can better a "properly used" passive for transparency, dynamics, uncoloured sound and extension in both the highs and lows. Unless you need to purposely colour the sound with the coloration's that all active preamps give.

Just read what  rob67  with friends and family said in a 4 way shootout in a very expensive hiend system, when comparing a passive pre to these three active preamps.
 
Audio Reasearch  Ref5se preamp
Pass Labs  X2.5  preamp 
Bryston BP20 preamp

https://forum.audiogon.com/posts/1623297

https://forum.audiogon.com/posts/1623299

Cheers George    
@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.