Model: PM Series Power Amplifier  PM Series is the most economic product,featured with high power, fast power  supply and higher load motivating force.Using high-qualified components. Ultra-high speed H circuit design,perfect timbre. Filter circuit, All frequencies un distorted digital pressure limit function, DC protection, automatic temperature control fan speed,no impact on the boot. Good choice for your equipment.  MODELPM2.4PM2.6PM2.8PM2.10PM2.15Stereo power 8Ω400W×2600W×2800W×41000W×41500W×4Stereo power 4Ω600W×21200W×21200W×41500W×42500W×4Bridge power 8Ω1100W1500W2500W×2 4000W×2Frequency response(@1W)20Hz-20kHz ±0.5dBTHD(rated output power)≤0.05%≤0.05%≤0.05%≤0.05%≤0.05%Damping factor (1kHz 8Ω)﹥300﹥200﹥200﹥200﹥200S/N ratio (A weighted)﹥96dB﹥96dB﹥96dB﹥96dB﹥90dBInput sensitivity0.775V0.775V0.775V0.775V0.775VInput impedance20KΩ(balance)/10KΩ(unbalance)ProtectionLimit/thermal/DC/short circuitVoltageAC220V/50HzDimension ((W×D×H)mm483x402x88.8483x402x88.8483x402x88.8483x402x88.8483x402x88.8Weight17kg22kg23kg25kg39kg