... a lot on the compaction of construction, limitation of parts's specification and tone, style, full of energy, a sense ... 20KHz.-3dB@100KHzDistortion<0.03%Slew rate30V/μ sDamping factor>450S/N ratio>95dBInput impedance20KΩ/bal,10KΩ/unbal.Input sensitivity0.775V,1V ... ,1.4VSegregation>70dBPower supplyAC220-240V,50/60HzDimensions580X580X160mmTotal19kg C-12 2-channel professional amplifier