Classic preamp for Plinius SA-102: need advise


I have the newest (and the best, for me) Plinius power amp. The SA-102. It is an expensive amp so my budjet for a preamp is therefore small (1000-2000 US$). BUT, reading some commnents on old classic preamps I found out that I may
get a used preamp which is as good or even better than the ones that are manufactured today.

Could you please give me a hand on this? Here it goes:

1. I do not have a turntable (so phono is not an issue).
2. The Plinius has lots of punch, impact and an extremely open sound. So I am looking for a tube preamp with a liquid (but not too much coloured, of course), soft highs and good bass, plus with LOTS of air.

I thought that maybe an older Audio Research (the SP-10 seems to be bad for CD; maybe the LS-5?) or a nice Jadis might be good mates for my Plinius. What would you advise me (brand and models)?

Tejo
tejo5a2c
Agree with tube options above.
You can also spread yourself over passive preamps that can realy integrate good with Plinius 102.
I used to own a SA 100 mark 3 and I tried it with an old VTL delux pre amp ($ 600 used maybe less) and it sounded pretty good, smooth and airy and a little sweet. but not the last word in definition, thats something I'm always willing to sacrifice for involvement. I like S.F. gear too but it is a little dry for my taste however its quite accurate and might suit your needs. Conrad johnson gear used with this amp resulted in a rather dark sound. Experiment and enjoy!
On the other hand the Plinius CD-LAD mates well. I have a CD Player (Res. Ref.) that can drive my SA102s directly very well (using Cardas Golden Reference ICs). When I insert a CD-LAD between the CD and amp (using a second pair of Cardas Golden Reference) I get a fuller, deeper, slightly darker sound with better bass speed and weight and smoother treble. Which seems to me to be the direction you want. A second-hand CD-LAD is well within your price range. The big advantage you will get over a classic tube preamp is extension and speed. I would tend to tailor the sound with cable choice not components.
I would definitely look for a used BAT VK-5i over any of the SF line. I love SF amps, but their pre-amps sound kind of lifeless and dull to me.
Meanwhile, I have received this message from Plinius:

"Please have the preamp checked to see that is has no DC at its output before you use it as the SA102 is direct coupled."

Can you explain me (slowly...) what this means?