At MedRx, continuous improvement is a way of life. We listen to our customers! Now 1-1/2 " Longer To Accommodate Two Sets of Headphones at the Same Time, Now with Automatic Driver Installation and Now the A2D+ is No Longer USB Port Specific! • Dual Channel Audiometer • Air, Bone & Speech Functions • Powerful 3rd Party Counseling Tools • Optional Integrated QuickSIN™ • Optional: Automated Audiometry • Compact Design, Portable • Small Footprint • PC-based via USB Connection • Runs within NOAH™ or Stand Alone The AVANT™ A2D+ is truly plug and play. No need to load separate drivers during the initial device installation. Simply install the operating software, plug the device into the USB 2.0 port of your computer and you are ready to test. No longer USB port specific! The computer will recognize the audiometer immediately, making the installation process even faster and easier.