As I mentioned in my welcome message, the speakers of my main rig are ADS L1230, which I bi-amp through the proprietary ADS 2000 bi-amp system. The bass is driven by Crown D150A mono blocks (I did mention I was old school in an earlier post) and the mids/tweeters are driven by a Rogue ST-100 tube amp. I would love to discuss this type of set-up with any member who might be running a similar rig.