Abstract: A linear-travel mechanical switch for use in a headphone device comprises a user button attached to a plunger. The plunger extends into a body of the headphone device. A travel pathway extends in a first linear direction from the plunger and in a second, opposite linear direction from the plunger. At least one bias device is integrated into the linear-travel mechanical switch. The at least one bias device biasing the plunger to a middle position along the travel pathway. A plunger button is located such that depressing the user button engages the plunger button. A first button is located such that a movement of the user button along the travel pathway in the first linear direction engages the first button. A second button is located such that a movement of the user button long the travel pathway in the second, opposite linear direction engages the second button.