Preamp or not.


I currently have the following setup Bluesound Node 2I, Topping D90, Pass XA25, Crites Type B speakers.
I originally had a Sunfire preamp but it failed. Then I upgraded my system last year. I tried a passive pre amp but removed it and now run the DAC direct to amp. The passive sounded fine but I ended up running it at full volume. No remote. I use the Bluesound ap to change volume. My thinking was less is better. My speakers are efficient and dynamic.

The Topping puts out 2V. Pass told me this is adequate. I am wondering what a preamp would do. How would it improve or degrade the sound? How much gain do I want from the preamp? Tube or solid state? Any other suggestions are welcome or should I just leave this alone? I don’t like buying, selling and failing. Here are some I saw that look interesting.

Pro-Ject Pre

Doge

Modwright

Van Alstine

I would like to spend 2000 or less. I don’t need Phono. Remote volume would be nice. Thank you again.

128x128daledeee1
Been doing some digging after the group's guidance.  The links to other discussions was very helpful.  I see the Tubes4hifi pre amps are given to Don Sachs for his tweeks.  It looks like you can add a lot of options to the SP14.  It has 6SN7 tubes which many say is "the best" tube for pre amps!  Price is very reasonable.  I sent an email to Bob Latino and asked about gain.  I am assuming, so far, that the gain can be lowered or adjustable.  This would be a quite affordable version to try.  The passive Schiit was also intriguing.  I currently have a very "live" sounding setup.  It keeps getting better the more I play it.  Those who listen to more laid back setups might find my system not to their liking.  I think the tube preamp and eliminating the Bluesound volume(turning up all the way) would be a big change to my system.   The Topping and the Pass are both very quiet so it will be interesting. 
The Aric pre I mentioned can be configured for 6Sn7 tubes. Possibly variable gain. There is a thread on it here at AG. 
Thanks for the recommendations.  I am wondering about the difference in sound between the 12AU7, 6189W, 6SN7 vs 300B.  Bottlehead makes a preamp that uses a 300B which seems unique, but I am not a kit builder.  There are several choices in volume controls as well.  Is the main improvement more linear control or is there a better sound as well? 


Don Sachs here.  I see above that someone mistakenly things the tubes4hifi preamps are somehow given to me for tweaking.  Huh?   I get the bare board from Roy.  He has changed the board over the years with suggestions I have made.   That is it.  I choose every part.  I run the tubes at a different operating point.   I have modded the power supply and filament supplies, I use a much shorter signal path, I run the tubes on top and out in the open.  I use a 6BY5 rectifier, etc...   You can buy an sp14 kit and love it.  You can have Roy build you one and you will love it.  But it won't be my preamp.
I apologize for that, Don.  I do not understand what it takes to build equipment and should be more careful when posting.