This professional quality unit is from the mid 2000s. It has six headphone outputs with individual level controls. Sounds can be presented through a main stereo input jack or through through six insert jacks for separate use of channels. Pan control and a Stereo/Mono switch allows mixing 2 mono channels. As far as I know, from testing just now it works perfectly.
The asking price reflects fair market value but I am open to any reasonable offer. I am also open to trades for guitar or bass parts or a guitar in need of repairs.