I am running the 20 s on the Balanced Audio Technology 6200 with 2 200 w modules on each speaker . Aerial cc 5 and 10 ts for rear all are biamped the same way. 2 sw 12 subs round out multichannel system. The Meridian 861 is my preamp/processor. I have heard it on Levinson gear as well . The 20 t s are ruthlessly revealing of the downstream chain so audition each piece carefully. I ended up with Valhalla because of this very reason. I have the Classe Omega amp-pre combo in another system and intend to try the 20 s there in the near future. As for the sound of the 20 - Bat - meridian combo. It is breathtaking.
