Long time reader, first time caller...er commenter. I might be biased since I work for them, but at www.stages.co we've JUST unveiled a headphone and a tabletop product (that lets you use any existing headphones) that I think this thread would find relevant. Directional listening, noice cancellation, noise reduction, high quality audio, user configurable admittance criteria - we have it all.
Are those products you have at stages.co already developed and built or are they in development? Why would someone use that desktop device instead of the headphones?
We'll be bringing developed products to CES in January 2017 and will be announcing details on our production rollout plan soon. The reason for the desktop product is to allow you to use any existing set of headphones you already own, but still take advantage of our microphone array, unwanted noise reduction, music quality improvements, etc. Basically, we wanted everyone to be able to take advantage of our tech, even if they have a pair of headphones they already love.