Tube Preamp for 4B SST2

Any help here? Any one using a similar combination?

In my experience, buying an ARC preamp without hearing it in my system first would be too chancy. You can get good sound, but I find that's not always the case. Sometimes they sound too bright. If you don't have the means to listen before you buy, maybe look at a different brand. Aesthetix, BAT, Ayre (I know its only SS and you are asking for tubes.) and CJ (if you don't need all balanced components), would be safer choices. One thing I can say for certain is to get the best preamp you can. Its the most important one to get right (Assuming you didn't make any big mistakes with your other components. That doesen't appear to be the case with the components you list). If not, you'll alyways be trying to fix something (cables, tweaks etc...)

There have been a lot of folks who have used Bryston with ARC
with great synergy.
A few years back when I home auditioned a ref 5 with my 7B-sst's I liked it a lot.
Didn't find anything non musical about it except the I couldn't afford it at the time.
Would I have bought it if I had the coin,of course I would have.
Now I use 28s with a Vac pre and am very satisfied.
Might want to look on older posts that have arc and Bryston.
There are quite a few on audiocircle also that use tubes with the Bryston.
Hopefully you find your specific arc pre with Bryston.

Zd542: what makes you think that these other brands should be less chancier to match than ARC? from the previous threads in Adiogon it seems to be the safest combo after Bryston pre and power.

I found very few threads contains information about SP17, I need some comparison between different ARC Pres like LS15, LS16, LS25 compared to SP17.

I can recommend both CJ and Manley preamps working well with Bryston and have them through a 4BST.