Yea the Egglestonworks Ivy are Bob Ludwigs (Gateway mastering) left & right channels($100,000 pair)
They have 23 Drivers in them and weigh 720 lbs w/the Italian granite. Bob's center channel and the L/R
surround channels (for SACD mastering) are the Egglestonworks Andra II.
Here is a pic of some Ivy's in the building process(that's my wife back when she was pregnant, she would kill me
)