DA4075: 1) RMS power@4ohm: 60W x 4CH 2) Bridge mode power@4ohm: 150W x 2CH 3) THD@4ohm: 4) S/N (A-weighted): >90dB 5) Input sensitivity: 0.15 - 3V 6) Frequence response: 20Hz - 20kHz 7) Low pass frequency: 30Hz - 180Hz 8) Dimensions (W x L x D): 208 x 226 x 52mm Packing: Gift box DA2075: 1) RMS power@4Ohm: 60W x 2CH 2) Bridge mode power@ 4ohm: 150W x 1CH 3) THD@4ohm: 4) S/N (A-weighted): >90dB 5) Input sensitivity: 0.15 - 3V 6) Frequence response: 20Hz to 20kHz 7) Low pass frequency: 30Hz - 180Hz 8) Dimensions (W x L x D): 208 x 170 x 52mm Packing: Gift box