ACTIVE STUDIO MONITOR An advanced successor to the A77X, the A-Series A77H is a true three-way midfield monitor that takes advantage of the latest ADAM Audio technologies to deliver rich, spacious, and immersive sound. Incorporating two 7-inch woofers, a midrange driver, and ADAM Audio's X-ART tweeter, the A77H has the widest frequency range in the A-Series line. The addition of the midrange driver helps produce clear sound in the most sensitive range of the human ear. Rotating HPS waveguide technology and onboard DSP allow you to fine-tune the sound to your precise requirements.