What preamp creates the largest soundstage?


I have always loved a large soundstage.  I have a small listening room (10x10) and have mini-monitors, driven by a tube amp.  I have played a lot with speaker placement, room acoustics, listening position to create a large soundstage.  I have rolled tubes on the amp and made dramatic improvements. (I have purposely left details on the brands of tubes, amp and speakers out, because I don’t want side comments to distract from my question)

i have a digital source into a solid state naim preamp.  I home demo’ed a well reviewed preamp, and was surprised at how much the soundstage shrunk, both side to side and top downward.  It was deeper, and did have much of the tube magic, but I could not live without the big soundstage.  

so my question is, does anyone have experience with a preamp that produces a big soundstage?  I am looking for recommendations on what to demo next. While I lean toward tubes, I am open to solid state.  I am okay either new or used, and could spend in the 5k range, but would be happy to spend less.  Also comments on specific brands (i.e. xyz is known to have great soundstage in all their preamps) as opposed to models, are welcome.

and I will be the first to admit that perhaps the very large soundstage is not “accurate”to real music, but boy is it seductive and I love it and can’t live without it.

meiatflask
Kalali-  I think you make a lot of sense.  Once you have strong candidates, it is probably a “how” the soundstage is rendered.  And perhaps once one is willing to spend (what to me is) a reasonable amount of money, most of the candidates are pretty strong.   
@meiatflask it's good you demoed it.System synergy is everything.In my set-up the soundstage became wider  and deeper instantaneously.I did experience some weird sonics the second day but turned out I had a bad cable.Best of luck in your search!It can become frustrating auditioning and returning.
OP: There are a lot of preamps that will create a nice 3-D soundstage. I prefer tube preamps as active devices for doing this, such as an Audible Illusions Modulus preamp. But I’ve had dB Systems active transistor preamps do a great job with creating a nice 3-D soundstage. And my Teo Audio Liquid Pre passive preamp does an admirable job as well. The bottom line is that a lot of preamp designs will serve you well in this regard.
I own the Schiit Saga, only 349,00  Has a single tube: stepped attenuators, can run passive too. I’m very happy with mine running into a Linn LK140. With a 15 day restock policy you are not locked in,,except for small restock fee. I’m a professional musician,I know live sound for 50 years, The Saga May surprise you. Also I’d be interested in knowing what interconnects you use. In my experience interconnects play a big part in “soundstage “. I can hear the groans now LOL.  I roll my own and have spent many 100’s hours listening to wire. I also really like Franks Signal cable silver Ic,s and silver speaker wire. If we’re discussing soundstage or clarity wire unfortunately remains the weakest link. IMHO.