something I noticed after owning 20T for a few months.
20T bottom firing port, unlike B&W which has a fixed base with predetermined distance to the port, can drastically affect how the bass is coupled to the room. so do play with speaker heights, a little change there can make a big difference in sound.
Tilt. Aerial likes to have their 20T tilted slightly upward duirng demo. depending on music, I do like slight tilt most of the time. can't tell you the angle of tilt, but my very sensitive bubble level definitely captures the tilt. slight tilt gives a more pleasing presentation instead of very direct and in-your-face sound. 20T's ribbon is very vivid and has good micro dynamic, slight tilt will achieve a more musical balance.
don't use supplied jumpers + wires, bi-wire them if you can. if you don't like running two long speaker wires, at least run one long jumper wires from bottom binding posts to the head units. you will notice less glare and edginess on less than perfect recording. especially if you have them toe in crossing right behind your head, you will hear big improvement in midrange/top end smoothness.
I will try to put my 20T on some solid platform like granite or Symposium shelf to control port distance and air diffusion/absorption, my 20T sits on carpet with thick pads and there is strong interaction to the floor.
