Now with CRoft model 7 R stereo amplifier, replacing T8's OTLS, to a very good results with stacked ESL's57...
"Classic" system with one pair only of Quads ESL 57's,with Wayne Picquets panels with "Hybrid" Amplifier" : very good results with classical music and jazz ( analog or digital).
link to youtube vídeo...
https://www.youtube.com/watch?v=1E_I90_V5aw
but your drum system must be very special!