Preamp Opinion


A couple of weeks ago, I asked for advice on my amp and preamp. Although I am sure that it could be improved, I have come to the conclusion that the Parasound A23 is the least of my problems. I also have a Parasound New Classic 2100 preamp, a Marantz 8600 CD player/streamer (which I also think doesn't need to be replaced), and Focal Aria 926 speakers. I did listen to advice I was given and am expecting a vintage McIntosh SL-1 sub to my system.

I am looking at a few used preamps and wanted to get your opinions on them since the only one I have heard is the Adcom GFP-750 and that was years ago. My memory is that it had a very good sound to it. The other preamps I am considering are the Rotel RC-1572, Rogue RP-1, Coplant CTA 301 MKII, Bryston BP6, and Vincent SA-T7. Unfortunately, I have not heard any of them and don't have a location where I can. I tend to prefer a sound that is not too bright but provides a good clear soundstage and imaging. I have always owned solid state before and am a little leery of tube maintenance.

Thank you for your advice or observations about any of these preamps.
bcool57
I assume you’ve seen this BP6...

https://www.audiogon.com/listings/lisacbia-bryston-bp6-stereo-preamplifier-bp-6-black-19-32990-solid-state

Not sure, but this seller might accept returns if it doesn’t work for you but not sure about that.  Just FYI. 
Schiit Freya +...incomparable features, 4 tubes that can be bypassed if you feel the need (solving the "should I get tubes?" question), plenty of balanced and single ended ins and outs, amazingly quiet operation...great sound, relatively inexpensive (less than anything noted here in other comments at around 900 bucks). I have the first version and have no desire to replace it. Killer preamp. Try it, send it back if you don't like it. Done.
Of the preamps you mentioned in order
Copland 301, Bryston, and the Rogue.
The Copland while the oldest design is still an outstanding preamp which lends itself well to updating. 
Bryston's are certainly not bright, but can be a little dry sounding, but work well with a lot of amps. The Rogue is very nice, but can be noisy  and has a lot of gain.
Ignore the bull about the 12auh7 tube. It's the implementation  that counts. 
I would also be pleased to quote you on a build to give you what you want.