The Coleman Audio HP6 is a six-channel headphone aplifier with two stereo cue inputs on the backpanel that uses combo jacks so either TRS 1/4" or XLR connectors will work.
The front panel has six stereo outputs - Each has a select switch for desired cue signal and an individual level control for the headphone output.
Plenty of Power
Designed with discrete transistors so you will be able to drive any headphone that you may use.