---
product_id: 164709464
title: "BOSS Audio Systems OX4.400 4 Channel Class A/B Car Amplifier – 1600 High Output, Low/High Level Inputs, Low Pass Crossover, Add Bass to Your Subwoofer"
brand: "boss audio systems"
price: "1299 Lei"
currency: RON
in_stock: false
reviews_count: 11
url: https://www.desertcart.ro/products/164709464-boss-audio-systems-ox4-400-4-channel-class-a-b
store_origin: RO
region: Romania
---

# 1600W max output power 4 channel Class A/B topology Variable bass boost & low-pass crossover BOSS Audio Systems OX4.400 4 Channel Class A/B Car Amplifier – 1600 High Output, Low/High Level Inputs, Low Pass Crossover, Add Bass to Your Subwoofer

**Brand:** boss audio systems
**Price:** 1299 Lei
**Availability:** ❌ Out of Stock

## Summary

> 🎵 Unleash the Power, Own the Road – Feel Every Beat Like Never Before!

## Quick Answers

- **What is this?** BOSS Audio Systems OX4.400 4 Channel Class A/B Car Amplifier – 1600 High Output, Low/High Level Inputs, Low Pass Crossover, Add Bass to Your Subwoofer by boss audio systems
- **How much does it cost?** 1299 Lei with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/164709464-boss-audio-systems-ox4-400-4-channel-class-a-b)

## Best For

- boss audio systems enthusiasts

## Why This Product

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

## Key Features

- • **Dual Input Flexibility:** Supports both low-level (RCA) and high-level inputs, ensuring seamless integration with any head unit.
- • **Precision Bass Control:** Fine-tune your low frequencies with variable bass boost and a low-pass crossover for that perfect thump.
- • **Versatile 4-Channel Design:** Perfectly bridgeable to power both speakers and subwoofers for a fully immersive soundstage.
- • **Built to Last with Confidence:** Backed by a 6-year Platinum warranty and engineered for professional installation to keep your system running strong.
- • **Power That Commands Attention:** Delivers up to 1600W max output to fuel your car’s audio with crystal-clear intensity.

## Overview

The BOSS Audio Systems OX4.400 is a robust 4-channel Class A/B car amplifier delivering up to 1600 watts max output. It features bridgeable channels, variable bass boost, and a low-pass crossover for precise sound customization. Compatible with both low and high-level inputs, this amplifier is designed for professional installation and backed by a 6-year warranty, making it a reliable powerhouse for upgrading your car audio experience.

## Description

desertcart.com: BOSS Audio Systems OX4.400 4 Channel Class A/B Car Amplifier – 1600 High Output, Low/High Level Inputs, Low Pass Crossover, Add Bass to Your Subwoofer : Electronics

Review: Pushing 2 15's no problem - Gotta say I'm impressed with this amp. I upgraded from a Boss 1500w due to my rca inputs going out, typical since the amp was 8yrs old and I put it through hell in those 8yrs. But this 4000w amp is legit, definitely worth the money. It's pushing my 2 15 Skars just fine, got them wired at 2ohms right now. Gonna drop it down to 1ohm and see how it's hitting. Very impressed and would recommend.
Review: Enjoy! - Customer loved it sounds great.

## Features

- Power - 400 Max x 4 @2 Ohms, 200 Max x 4 @4 Ohms, 800 Max x 2 Bridged @4 Ohms
- Class A/B Topology - Class ‘A’ amplifiers have enormous amount of current flowing through its output transistors with no audio signal. Class ‘B’ amplifiers have no current flowing through its outputs with no audio signal
- Full Range - With a Full Range amplifier you not only have the option to run your speakers, but also your subwoofers
- Bridgeable - Dramatically increase the power output to you speakers and subwoofers by connecting two amplifier channels
- Low-Pass Crossover - Subwoofers reproduce sound based on a number of different low-range frequencies. You can set exact sound specifications for the bass frequency reproduction
- Variable Bass Boost - With Variable Bass Boost you have the control of exactly how much BASS you want to pump out to your subwoofer(s)
- Low & High Level Inputs - A low level (RCA) input is measured in voltages. A high level (+/- wire) input is measured in wattages. Both essentially carry signal from your receiver to your amplifier to your speakers
- Specs – Dimensions: 12.25” x 7” x 2.3”, Weight: 6.4 lbs.
- BOSS Audio Systems provides a powerful 6 year Platinum Online Dealer Warranty so long as the purchase is made through desertcart.com. We strongly encourage professional installation of this product to ensure proper and safe functionality

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07P6F55QQ |
| Best Sellers Rank | #50,789 in Electronics ( See Top 100 in Electronics ) #417 in Car Multichannel Amplifiers |
| Brand | BOSS Audio Systems |
| Color | Black |
| Customer Reviews | 4.2 4.2 out of 5 stars (603) |
| Date First Available | February 25, 2019 |
| Global Trade Identification Number | 00791489125857 |
| Item Weight | 6.4 pounds |
| Item dimensions L x W x H | 12.3 x 7 x 2.3 inches |
| Item model number | OX4.400 |
| Manufacturer | BOSS Audio Systems |
| Mounting Type | Surface Mount |
| Number of Channels | 4 |
| Other display features | Wireless |
| Output Power | 1600 Watts |
| Product Dimensions | 12.3 x 7 x 2.3 inches |
| Specification Met | FCC |
| UPC | 791489125857 |
| Whats in the box | Remote subwoofer control |

## Product Details

- **Brand:** BOSS Audio Systems
- **Item dimensions L x W x H:** 12.3 x 7 x 2.3 inches
- **Manufacturer:** BOSS Audio Systems
- **Mounting Type:** Surface Mount
- **Number of Channels:** 4

## Images

![BOSS Audio Systems OX4.400 4 Channel Class A/B Car Amplifier – 1600 High Output, Low/High Level Inputs, Low Pass Crossover, Add Bass to Your Subwoofer - Image 1](https://m.media-amazon.com/images/I/41qXUwUKhWL.jpg)
![BOSS Audio Systems OX4.400 4 Channel Class A/B Car Amplifier – 1600 High Output, Low/High Level Inputs, Low Pass Crossover, Add Bass to Your Subwoofer - Image 2](https://m.media-amazon.com/images/I/518Pt6ge93L.jpg)
![BOSS Audio Systems OX4.400 4 Channel Class A/B Car Amplifier – 1600 High Output, Low/High Level Inputs, Low Pass Crossover, Add Bass to Your Subwoofer - Image 3](https://m.media-amazon.com/images/I/51A7gFT2KGL.jpg)
![BOSS Audio Systems OX4.400 4 Channel Class A/B Car Amplifier – 1600 High Output, Low/High Level Inputs, Low Pass Crossover, Add Bass to Your Subwoofer - Image 4](https://m.media-amazon.com/images/I/51FlwU2fNDL.jpg)
![BOSS Audio Systems OX4.400 4 Channel Class A/B Car Amplifier – 1600 High Output, Low/High Level Inputs, Low Pass Crossover, Add Bass to Your Subwoofer - Image 5](https://m.media-amazon.com/images/I/51TT5MhxtbL.jpg)

## Questions & Answers

**Q: Who’s this do good on a skar zvx 15 one ohm and with 0guage power and ground wire**
A: Yes I have two jbl 1000 watt 12 in speakers running on it and it bang like I got 15 s in the truck with an epic

**Q: Is connecting bare wires from speakers to this possible??**
A: Yes

**Q: Is this a discontinued item?**
A: Sometimes

**Q: What subwoofers should i purchase with this amp? And would purchasing a capacitor help with head lights dimming**
A: 10s

## Customer Reviews

### ⭐⭐⭐⭐⭐ Pushing 2 15's no problem
*by J***. on November 8, 2024*

Gotta say I'm impressed with this amp. I upgraded from a Boss 1500w due to my rca inputs going out, typical since the amp was 8yrs old and I put it through hell in those 8yrs. But this 4000w amp is legit, definitely worth the money. It's pushing my 2 15 Skars just fine, got them wired at 2ohms right now. Gonna drop it down to 1ohm and see how it's hitting. Very impressed and would recommend.

### ⭐⭐⭐⭐⭐ Enjoy!
*by M***L on December 30, 2025*

Customer loved it sounds great.

### ⭐⭐⭐⭐⭐ Amazon is awesome!
*by A***R on April 17, 2025*

The amp works great but the bass boost knobe does not work!

## Frequently Bought Together

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- BOSS Audio Systems KIT20 0 Gauge Amplifier Installation Wiring Kit - A Car Amplifier Wiring Kit Helps You Make Connections and Brings Power to Your Radio, Subwoofers and Speakers
- Kicker 46KISLOC2 K-Series Stereo Line-Output Converter w/Remote Turn-On Output

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**Shop now:** [https://www.desertcart.ro/products/164709464-boss-audio-systems-ox4-400-4-channel-class-a-b](https://www.desertcart.ro/products/164709464-boss-audio-systems-ox4-400-4-channel-class-a-b)

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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-01-29*