Pair of 3-Way Powered Monitors - Generation 2 - Excellent Condition! Power comes from three traditional Class-A/B analogue amps, delivering 30W each to the mid-range and HF drivers, and 80W to the bass driver, with crossover points between drivers at 350Hz and 3.5kHz. The outcome is a 31Hz-20kHz frequency response, at SPLs of up to 113dB, which approaches what some PA systems generate!