KS 125.4 Mini - ARC Audio 4 Channel 500 Watt Motorcycle Amplifier

ARC Audio KS 125.4 Mini

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 amplifier 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.

Features:

• Compact Multi Channel Amplifier Design
• Optically Isolated Mosfet Power Supply
• Can Drive Highly Reactive Loads
• Protection Against: Reverse Voltage, Over Voltage, Speaker Short, and thermal Overload
• Compact Chassis Design for Small Vehicle applications including Motorcycles
• Designed by Robert Zeff
• Class A/B Non Digital Switching design
• Stable to 2 ohms
• Low Radiated Noise for Clean AM/FM reception

Specifications:

• Power @ 4 ohms: 75 X 4 watts
• Power @ 2 ohms: 125 x 4 watts
• Power @ 4 ohms(Bridged): 250 x 2 watts
• Signal to Noise: 92dB
• THD: .05
• Frequency Range: 10Hz– 50KHz
• Crossover: Butterworth (55Hz – 550Hz)
• Bass Boost: 15dB 45Hz
• Fuse: 30A x 2
• Size: 11.6' (L) x 5.15" (W) x 1.7"(H)

Manual