Introducin: Type AMP 2*35W AMP 2*50W AMP 2*75W AMP 2*100W Double track output 8Ω 2*35W 8Ω 2*50W 8Ω 2*75W 8Ω 2*100W 4Ω 2*50W 4Ω 2*80W 4Ω 2*100W 4Ω 2*150W Bridgeable single track 8Ω 100W 8Ω 150W 8Ω 200W 8Ω 300W Power 150W 200W 300W 450W Size(mm) :48*275*44 Weight(kg):4.5 5.2 6.5 7.5 Technical Parameter: Total frequency distortion:20Hz - 20KHz≤0.1% Frequency response:20Hz - 20KHz±0.5dB Signal noise ratio:≥95dB Intermodulation distortion:<0.01% Up speed_:45Vus Input impedance:20KΩ Imput levle:0dB Working voltage:AC220V±5% 50Hz±2Hz