Top quality car stereo amplifier. The amplifier will turn listening to music into a new and exciting experience for you. Optimized circuit design accounts for the brilliant and dynamic hi-fi sound reproduction you will get from this high performance amplifier. Total power (14.4V @ 1KHz): 4-ch. Cahnnels: 4/3/2channel. RMS power (4 Ohm): 4*60 watt. RMS power (2 Ohm): 4*84 watt. RMS power bridged (4 Ohm): 2*170 watt. Frequency response: 20Hz-20KHz. Signal to noise ratio: ＞ 95dB. Separation @ 1KHz: ＞ 62dB. THD: ＜ 0.05%. Input semsitivity: 300mV-3V. Low pass filter: 50-550Hz/12dB. High pass filter: 50-550Hz/12dB. Bass boost: 45Hz/0-18dB. Idle current: 1A. Fuse rating: ATC 30A*2. Attention:   Since this SKU is over 2 KG(exceeds airmail’s limitation for weight), FocalPrice will Ship it via EMS separately. Customers do not need to change the shipping method for the whole order if you want other products to be shipped by airmail. Normally, EMS fee is covered by the price. But for some countries in South America, East Europe and Africa, additional shipping fee will be charged due to the high EMS fee.   To view whether additional EMS fee will be charged for your destination, please click the link below   http://www.focalprice.com/helptype.html?ParentID=&TypeID=&helpID=28#28