. Feel the difference with the Encore Pro. The over-the-head headset incorporates a range of leading design features to enhance the performance of your customer service representatives. The sophisticated new design offers visual & tactile boom positioning feedback ensuring the microphone is placed correctly for the clearest conversations. Lighter weight & softer more luxurious ear cushions create a level in comfort for staff who need to be performing at their peak all day every day. & with laser welding & aircraft-grade aluminum this is the most durable Encore Pro yet. Encore Pro headsets require a Plantronics audio processor or direct connect cable to connect to phone or USB (Universal Serial Bus) audio processor to connect to computer..