Preamp... Solid State or Tube


I am looking for 2-ch preamp that must have HT bypass option to mate with my existing HT processor.  

My budget is 10K for this upgrade.  Couple of preamps comes to mind but I have no experience with these components.  

Ayre KX-5 Twenty
Aesthetix Calypso 
 
My system consist of following components, 

Speakers - B&W 800D2
Source - Aurender N10,  Modwright Elyse DAC, Raysonic CD-128
Amps - Modwright KWA150SE (Pair of them being used in bridge mode)
Processor - Krell 707
Cables - Verastarr Grand Illusion Statement and Signature series

Any recommendations will be highly appreciated. 

128x128lalitk
lalitk,

the ZTPre has an introductory price of $3735 and will go up soon after. You can also audition for 30 days and return.

 Another vote for Modwright. I tried the LS 100 and 36.5 and the latter was clearly better. I also tried an ARC Ref 3 about the same time and preferred the 36.5 at a good saving.

 The two box version of the 36.5 is a clear step up to the one box version. Unfortunately, the dealer told me you can not upgrade from the one to the two box version. I would love to hear it against the ARC ref 5SE. It is about £2000 cheaper than the ARC, in the UK. I suspect it is better or at least as good. I have heard both, but not side by side. I run the 36.5 into the ARC Ref 75SE, but I have run tube Pre's into SS Power units in the past and very much like the combination.

Back to preamp, I am looking for fully balanced circuitry from input to output.
You've not mentioned if you need a phono section.

Our MP-3 (which is fully balanced-differential and all-tube) would fit the bill and is known to work quite well with the Modwright amps. There is no HT bypass; you merely set the volume control to a particular position (which is essentially what the HT bypass does) and you are good to go.