I am looking for a very specific and unique feature that I haven't seen in a very long time.

In the early '90's the MTX MX350 and MTX MX 500 both had assignable headphone cueing. Next to each line there were separate buttons that assigned right and left side cueing. If both were pushed then you would hear in both ears. My location required me to mix in my headphones. I wouldassign whatever lime was on the floor to my left, and my cue to my right. Then I'd just switch for the next tune. The mixer also had a knob that would bring in whatever was on the floor. I think it was called "Program Mix" or something like that.

I need something like that. Is there anything available with these functions?
Thanks