No, John, along with Alan I definitely prefer open back headphones. I'm not a big headphone user, but on occasion I use my AKG 501s for some middle-of-the-night Rachmaninoff. For your use at work however, you clearly need a closed back headphone which doesn't leak sound to the outside, so I looked up a well-regarded example of the type available at a very good price.

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Enjoy the music, not the equipment.