@morg111 Marc, it comes down to your reference(s) of sound quality and how your system comes together to achieve that.
I looked through at least 60-70 percent of this 112 page DI thread. Felt like somewhere I’d find an answer to what amp preamp these DI speakers need. What I found was that the DI’s benefit having tubes either in the preamp or amp stage.
Is that now considered set in stone, they need so much warmth to sound their best that tubes must enter the picture???
I recommend following quality, whether tube or solid state amplification.
+1 to
@ozzy62 ’s post addressing the "warmth" issue you brought up:
Tubes need not always be associated with “warmth”.
Looking forward to learning what you choose. All the best in your search and choice.