Jadis The JADIS Company is the fruit of the profound passion of André Calmettes, who has devoted his spare time to researching the most precise musical reproduction in order to get back the emotion felt during a concert. With passion, he has created prototypes which make a great impression in the audiophile circle, and it was unanimously considered superior quality as compared to the best amplifiers at that time. The JADIS amplifiers give fantastic dynamics as much in the bass tones as in the higher trebles. They present a total lack of coloration, and most of them work in pure class-A. For these reasons, it constitutes the ideal amplification system for all acoustic speakers, whatever the impedance curve, the type of functioning, or the efficiency may be.