If you are interested in trying the Veritas' with a SS pre, I can recommend the Wyred 4 Sound STP-PRE.
It has (2) xlr-outs, and (2) SE-outs....(2) xlr-in, and (3?) SE-ins
Works very well with Berkeley Audio Alpha Dac II > W4S SX-500 monos> Magnepan 1.7
...very transparent, low-noise, with a beautiful soundstage,
and a mid-range that is the best I have had with the Maggie 1.7...just overall good synergy with front>pre and amps
I have not tried a balanced tube-pre with this set-up, but will demo one someday, to see if I can get the same transparent, balanced, quiet background of the STP-Pre, with some of the vocal and mid-range magic of my tubed head-phone amp (Decware CS2+, with Senn650 and Beyer t-90 headphones....
Tried the Berkeley Dac 2 direct into the amps....Liked the W4S pre better....no loss(or no perceived loss) of resolution, and better soundstage and mid-range
I have limited experience with other combos, but thought this might be another option, and a good match for the Veritas'
good reviews on the STP-Pre also