---
product_id: 161950268
title: "Arc Audio KS 125.4 Mini 4-Channel Amplifier"
brand: "arc audio"
price: "VT162587"
currency: VUV
in_stock: true
category: "Arc Audio"
url: https://www.desertcart.vu/products/161950268-arc-audio-ks-125-4-mini-4-channel-amplifier
store_origin: VU
region: Vanuatu
---

# Class G/H analog switching tech 4 channels @ 125W (2Ω) Multi-layer protection suite Arc Audio KS 125.4 Mini 4-Channel Amplifier

**Brand:** arc audio
**Price:** VT162587
**Availability:** ✅ In Stock

## Summary

> 🚗💥 Mini amp, massive impact — power your ride like a pro!

## Quick Answers

- **What is this?** Arc Audio KS 125.4 Mini 4-Channel Amplifier by arc audio
- **How much does it cost?** VT162587 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/161950268-arc-audio-ks-125-4-mini-4-channel-amplifier)

## Best For

- arc audio enthusiasts

## Why This Product

- Trusted arc audio brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Bass That Commands:** +15dB boost at 45Hz for that deep, room-shaking low end.
- • **Compact Powerhouse:** Fits small vehicles without sacrificing punch.
- • **Analog Audio Purity:** Non-digital Class G/H design delivers warm, dynamic sound.
- • **Seamless Integration:** Switchblade RCA inputs and auto-sense turn-on simplify OEM installs.
- • **Rock-Solid Reliability:** Built-in safeguards guard against voltage spikes & thermal overload.

## Overview

The Arc Audio KS 125.4 Mini is a compact 4-channel amplifier engineered for small vehicle applications. Featuring a non-digital Class G/H switching design, it delivers up to 125 watts per channel at 2 ohms with exceptional audio fidelity. Its robust protection system guards against reverse voltage, over voltage, speaker shorts, and thermal overload, ensuring reliable performance. With flexible input options including balanced switchblade RCA and speaker-level inputs, plus a patent-pending auto-sense turn-on circuit, it integrates effortlessly into OEM setups. Perfect for audiophiles seeking powerful sound in tight spaces.

## Description

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)

## Features

- Arc Audio KS 125.4 Mini 4-Channel Amplifier
- Compact Chassis Design For Small Vehicle Applications.
- Non-Digital Class G/H Switching Design.
- Protection Against: Reverse Voltage, Over Voltage, Speaker Short, and Thermal Overload.
- Can Drive Highly Reactive Loads.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07JJ2QGMH |
| Best Sellers Rank | #229,876 in Electronics ( See Top 100 in Electronics ) #536 in Car Multichannel Amplifiers |
| Brand | Arc Audio |
| Date First Available | December 16, 2008 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 4.6 pounds |
| Item model number | KS-125.4-Mini |
| Manufacturer | ARC Audio |
| Manufacturer Part Number | KS-125.4-Mini |
| Model | KS-125.4-Mini |
| Package Dimensions | 17 x 15.25 x 9.75 inches |
| Voltage | 3.5 Volts |

## Images

![Arc Audio KS 125.4 Mini 4-Channel Amplifier - Image 1](https://m.media-amazon.com/images/I/31SpcbhForL.jpg)

## Frequently Bought Together

- Arc Audio KS 125.4 Mini 4-Channel Amplifier
- RECOIL RCI23 100% Oxygen Free Copper 3ft 2-Channel RCA Audio Cable, Twisted Pair with Noise Reduction
- HOSONGIN RCA Y Splitter Cable, 1 Male to 2 Male Audio Cables (2 Pack), 12 Inch, 24K Gold-Plated, Cotton Braided, Shielded Subwoofer Cable for Amplifiers, TV, Home Theater, Hi-Fi Systems

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**Shop now:** [https://www.desertcart.vu/products/161950268-arc-audio-ks-125-4-mini-4-channel-amplifier](https://www.desertcart.vu/products/161950268-arc-audio-ks-125-4-mini-4-channel-amplifier)

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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-02-22*