VRx2.250 13.8V2路功放RMS功率:2×160W4Ω 2×280W2Ω 2×420W1Ω失真THD:0.02% 1KHz信噪比S/N:100dB阻尼系數(shù)DF:100 4Ω頻響范圍:2Hz~70KHz -3dB