Features FNS Series power amplifier using the world selected linear H class circuit design, output low distortion, low noise, high power, wide frequency response, high reliability, to provide users with high-quality sound effect, input mode: balance (XLR); Output mode: stereo, mono, bridge three ways; Suitable for all kinds of high-power sound amplification environment such as: all kinds of entertainment places, classrooms, lecture halls, conference rooms and all kinds of outdoor performance sound amplification. * Rated power: 300W(8Ω), 400W(8Ω) 600W(8Ω), 700W(8Ω), 800W(8Ω), 1000W(8Ω), 1200W(8Ω) ※Frequency response: 20 hz - 20 KHZ ※Total harmonic distortion + noise: ≤0.5% ※Damping coefficient: 200:1 (20-100Hz /8Ω) ※Intermodulation distortion: ≤0.02% ※Transient distortion: ≤0.03% ※Signal-to-noise ratio: 97dB(8Ω for full power of A weight) ※Conversion rate: ≥10V/uS ※Input impedance (balanced/unbalanced): ≥20K/10K