Which amp to use with Linear Tube Audio pre?

I really love my LTA Microzotl 2. Its bit clunky in a NAD 3020 sort of way but the sound always pleases.

I'd like to pair it with an amplifier that doesn't step on what it does, have used it with a Prima Luna Premium amp section and Musical concepts modded Hafler, both subtracted from what I can hear using it as a 1w amplifier direct. Am tempted to go for a Pass XA25 in my 12x12 listening room as that has good reviews driving Magnepan whereas the LTA amp sections do not.

Wondering if LTA pre owners have other recommendations?