---
product_id: 721601647
title: "Oea4 4-Channel Adjustable Factory Amplifier Interface"
brand: "scosche"
price: "$86"
currency: NZD
in_stock: true
url: https://www.desertcart.nz/products/721601647-oea4-4-channel-adjustable-factory-amplifier-interface
store_origin: NZ
region: New Zealand
---

# 9V power for stable signal 4-channel adjustable output compact & durable design Oea4 4-Channel Adjustable Factory Amplifier Interface

**Brand:** scosche
**Price:** $86
**Availability:** ✅ In Stock

## Summary

> 🔊 Elevate your ride’s sound game—because factory audio deserves a pro upgrade!

## Quick Answers

- **What is this?** Oea4 4-Channel Adjustable Factory Amplifier Interface by scosche
- **How much does it cost?** $86 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/721601647-oea4-4-channel-adjustable-factory-amplifier-interface)

## Best For

- scosche enthusiasts

## Why This Product

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

## Key Features

- • **Compact Powerhouse:** Slim, surface-mount design fits tight spaces while delivering robust, interference-free audio signals.
- • **Trusted Reliability:** Backed by Scosche’s renowned build quality and expert tech support for peace of mind.
- • **Universal Compatibility:** Works with a wide range of factory car audio systems—your go-to upgrade for any ride.
- • **Precision Audio Matching:** Adjust speaker level signals perfectly for crystal-clear, high-fidelity sound that audiophiles crave.
- • **Seamless Factory Integration:** Effortlessly connect aftermarket stereos to factory amps like Infinity, JBL, or Bose without rewiring headaches.

## Overview

The Scosche OEA4 is a 4-channel adjustable line level converter designed to seamlessly integrate aftermarket stereos with factory amplifiers from brands like Infinity, JBL, and Bose. Operating at 9 volts, it ensures optimal signal quality with minimal interference, housed in a compact, durable surface-mount design. Perfect for car audio enthusiasts seeking high-fidelity sound without complex rewiring, it’s a trusted solution backed by Scosche’s limited warranty and expert support.

## Description

Oea4 4-Channel Adjustable Factory Amplifier Interface

## Features

- Unmatched Versatility - Compatible with a wide range of factory car audio systems, this line level converter offers flexible installation options, making it a go-to solution for level matching speaker level signals to amplifier inputs for optimal sound.
- Seamless Integration - Integrate your aftermarket stereo with a factory amp using this line out converter and boosting your car’s audio performance without complex rewiring. Compatible with most factory symptoms including Infinity, JBL or Bose amplifiers.
- Enhanced Audio Experience - Transform your car audio system with the Scosche SLC4 OEM Premium Amplifier Adapter/Line Out Converter, delivering crisp and clear sound quality for your car audio system; perfect for audiophiles seeking high-fidelity sound.
- Compact and Durable Design - Engineered by Scosche, the OEA4 Amplifier Retention Interface and line out converter is compact and built to last, fitting easily into tight spaces while maintaining durability; a reliable upgrade for any car audio enthusiast.
- Optimal Signal Quality - Ensure maximum audio performance with this high-quality RCA converter for car audio, designed to minimize signal interference and deliver clean, powerful sound; the perfect addition to your custom car audio setup.Trusted Brand - Backed by Scosche's Limited ************************************************************* ************************************************************* and ************************************************************* Tech Support.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | SCOSCHE |
| Part number | OEA4 |
| Item Weight | 68 g |
| Product Dimensions | 11.43 x 7.62 x 17.78 cm; 68.04 g |
| Item model number | OEA4 |
| Style | Interface |
| Voltage | 9 Volts |
| Item Package Quantity | 1 |
| Plug profile | Surface Mount |
| Specification met | Oem |
| Batteries included? | No |
| Batteries Required? | No |

## Product Details

- **Item dimensions L x W x H:** 11.4 x 7.6 x 17.8 centimetres
- **Voltage:** 9 Volts
- **Manufacturer:** SCOSCHE
- **Minimum supply voltage:** 9 Volts
- **Mounting type:** Surface Mount

## Images

![Oea4 4-Channel Adjustable Factory Amplifier Interface - Image 1](https://m.media-amazon.com/images/I/61407q6mFCL.jpg)

## Available Options

This product comes in different **Style Name** options.

## Questions & Answers

**Q: Will this fit 94 Lincoln town car**
A: Scosche universal adapter OEA4 is compatible with your 1994 Lincoln Town Car, for more information please contact Scosche Tech Support at 800-363-4490 Ext. 3

**Q: Does this fit 2004 Nissan Maxima?**
A: This module fits any vehicle as long as there is space in the head unit area. Its not car specific at all from what I can tell, it just plays around with audio gains. Please look at the manufacturer web site if your not sure about what it is and what it does.

**Q: How is the noise filtering in this unit?**
A: It dosnt filter noise. I believe it only raises or lowers the signal gain. It does that pretty well.

**Q: Cant get volume to spekers**
A: Do you have the input and output correct? Input: from aftermarket radio's speaker leads to the "input" side of oea4...And the "output" side of the oea4 to the input of the factory amp???Hope that helps... Also make sure the dials are turned up enough on the oea4

## Frequently Bought Together

- Scosche OEA4 OEM Premium Amplifier Interface Adapter - 4 CH Adjustable LOC Level Converter - Retains Factory Car Audio Amp - Line Output Converter for Car Stereo Amplifiers - No RCA Connection Needed
- Scosche CRTNN01 Car Stereo Backup Camera Harness Compatible with Select 2010-20 Nissan Nav-Equipped Vehicles - RCA Wiring Adapter - Video Cable for Aftermarket Radio - See Vehicle Fit Guide in Images
- 20-pin Headunit/Radio Wiring Harness with Steering Wheel Switch Wires Compatible with Subaru/2007-2019 Nissan | Upgraded Version of The Metra 70-7552 | Harness Includes VSS and SWC pins

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-02-26*