Arc Audio KS 125.4 Mini 4-Channel Amplifier

Compact Chassis Design For Small Vehicle Applications. Non-Digital Class G/H Switching Design. Designed By Robert Zeff. Protection Against: Reverse Voltage, Over Voltage, Speaker Short, and Thermal Overload. Can Drive Highly Reactive Loads. Hi/Low Level balanced Switchblade RCA Inputs For Flexible Integration Into Most Applications. Optically Isolated Mosfet Power Supply. Stable To 2-Ohms. The KS 125.4 Mini Uses a Patent Pending Auto-Sense Turn-On Circuit That Offers a Significant Improvement in Reliability and Operation. To Further Simplify OEM Integration The KS 125.4 Mini Uses A Fully Balanced Input Stage That is Switchable Between Speaker And RCA Inputs. Simply connecting the Stock Speaker Wires to the RCA inputs Will Supply a Perfect Clean Signal To The Amplifier And Turn It On. In Addition, The Remote Turn-On Connection, With The Flip Of A Switch Becomes A Remote Turn-On Output To Connect The Rest Of Your Amplifiers.

Specifications -
4 - Channels @ 4 Ohms - 75 Watts
4 - Channels @ 2 Ohms - 125 Watts
2 - Channel @ 4 Ohms (Bridged) - 250 Watts
Frequency Response - 20Hz - 20kHz
Crossover Range - 40Hz - 550Hz
Bass Boost - +15dB @ 45Hz
S/N Ratio - 109dB
Input Sensitivity (Low) - 220mV - 3.5V
Max Current Draw - 51A @ 500 Watts 1% THD
Idle Current - 1.14A
Fuse - 2 x 30 Amp
Dimensions - 11.625"(L) x 5.125"(W) x 1.75"(H)