There were a small group of young guys who were obsessed by electronics and acoustics since they were children. They practised their passion as sound system designers and engineers in thousands of live shows featuring renowned bands and singers. They designed systems and used the most renowned audio brands in the world day after day. They studied electronic and acoustic engineering eagerly and thoroughly. After years of experience they understood the relationships between frequency response, phase, impedance, directivity, drivers, crossovers, amplifiers, transmission, pre-amp and levels...