thanks for telling me that now, after you sold them to me...
Whoa! I covered that with you in detail, William. One other "Southeastern" taper was involved in this conversation, without naming names. I can have him concur if you don't recollect.
There isn't anything audible that we found wrong with the xts, it's all theoretical - well more technical. We call it the XT lift. What happens to the response curve above the 20khz is something we didn't feel comfortable with. A dip, then a lift before it fades into 50khz. You can't hear it, you can just see it on an analog oscilliscope.
Hope that bumped a memory.