no doubt well made otl’s are especially well suited to drive esl’s be they quads, sanders, soundlabs, m-l's and so on
such amps do require quite a commitment from the owner, and some may shy away from these amps running with many many power tubes to maintain
i have had very good luck (and wonderful sound) with my trusty arc 100.2 on my esl63’s
furthermore one can also use a nice tube pre in front of a zero maintenance ss power amp...