having tried lots of preamps (at least 10 others......although none of those you listed) with Tenor 300 Hybrids and Tenor OTL's; the winner for me was the Placette passive RVC.
as long as you keep the interconnects very short between the Placette and the Tenors it has a great synergy. Tenor used resistive based passive for designing the Tenors.
i would expect that most any good pre would work well with the Tenor 150's as it is quite neutral and natural sounding.
ask me in a few weeks and i'll be able to tell you how my Tenor 300's match with the new darTZeel battery powered pre.....it will likely be amazing. i can't try it yet as the pre-production dart pre i have only has BNC outputs operational.
as long as you keep the interconnects very short between the Placette and the Tenors it has a great synergy. Tenor used resistive based passive for designing the Tenors.
i would expect that most any good pre would work well with the Tenor 150's as it is quite neutral and natural sounding.
ask me in a few weeks and i'll be able to tell you how my Tenor 300's match with the new darTZeel battery powered pre.....it will likely be amazing. i can't try it yet as the pre-production dart pre i have only has BNC outputs operational.