The mid-hi unit of Sonus faber Aida II speakers embraces a powerhouse of details aimed to maximize its performances. Tweeter and midrange are mounted on a front panel in solid aluminum CNC machined decoupled from the wooden front baffle by a system of an elastomer pad and 4 fixing pins to avoid any risk of spurious vibrations transmission. This solution, implemented for the first time on “the Sonus faber”, has been further improved on Aida II.