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Arc Audio KS125.4 Mini 4ch Amplifier

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Arc Audio KS125.4 Mini 4ch Amplifier
The KS Mini amplifiers are a totally "out of the box" rethink of what an amplifier can be. By taking a proven but underutilized Pro Audio amplifier class and bringing it up to date with modern components we can achieve uncompromising sound quality in a compact chassis that makes installation in even the most challenging cars and trucks a breeze.

Switching to a higher class. Class G and Class G/H amplifiers offer the best of all possible characteristics. Power output, distortion, efficiency, heat, noise, size are all class-leading specs with this design.

Why does this class of amplifiers perform so well? It's built for music, not test tones or noise. Class G/H works with the dynamics of your music, not against them. When an amplifier is playing music, even at full volume, due to its dynamic nature, it is really only working above 1/2 power about 10% of the time. You only need full power during the very loud passages like the impact of a drum or the pluck of a bass string. The rest of the time your 700-watt amp is making less than 350 watts. That's where the KS amp's Class G/H design comes into play. It's like having 2 amps in one. A 400-watt amp is much smaller and produces a lot less heat. Then, in a fraction of a second, your becomes an 800-watt monster that is ready for any musical challenge. The trick to making this work is in striking a balance between switching the high-power section on and off. It takes the years of experience Nikola Engineering has to achieve this delicate balance.

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)

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.

Free Shipping over $99

All order over $99 are shipped Free in the Contiguous United States (48 States). Please contact us for shipping to Hawaii and Alaska.

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