Jadis was created by André Calmettes, sharing his passion : the design and realisation of tube amplifiers intended to give the most accurate musical reproduction, ignoring all costs and difficulty. This passion - at times overriding the demands of sleep and leisure - resulted in the creation of prototypes that produced a sensation in audiophile circles. Jadis amplifiers and preamplifiers represent the ideal amplification system for all acoustic loudspeakers, whatever the load, the functioning (whether electrodynamics, electrostatic, or isodynamic) and the efficiency. They have marvellous dynamics from the bass to the highest treble, and a total lack of coloration, including the kind that tube electronics are usually accused of.