I'm considering replacing my passive preamp with a tubes. Is it worth it?


I would like to know if it would be worth it to trade my passive preamp for tube.  Would the change make a significant improvement?  

My setup:

Magnepan MG .7
Mod Squad Line Drive passive preamp
Bryston 4b-st amp
Rythmik f12 sub
Bluesound Node
Tidal streaming

My budget on a preamp would be $1k.  If the answer is "yes" then opinions would be welcomed.

thanks



amritash
I bought myself an Audible Illusions Modulus 2D yesterday.  It popped up priced under 500 and I leapt on it.   I am very excited.  It should be here next by early next week.
I have used Audible Illusions L1 tube pre-amp very nice. 
Do a google galen carol (out of TX) he sometimes has refurbished AI under $1K. 
... I just recently upgraded into a new-to-me Rogue Ninety-Nine and Bryston 4B-ST, and am very happy with the results coming out of my Gershman Avant Garde RX-20 speakers...
One of the finest designers and manufacturers of pre amps, Mr. Emmanual Go of First Sound, started by making passives and now produces only actives.   

That is in itself is a statement given the superb quality of his products.  Vacuum tube pre amps at their zenith.