---
product_id: 72681503
title: "Infinity REF-704A 1000W Reference Series 4-Channel Amplifier with Complete 4 Channels 2500W 4 Gauge Amplifier Installation Wiring Kit and Free Mobile Magnet Phone Holder"
brand: "infinity pkg"
price: "A$144"
currency: AUD
in_stock: false
reviews_count: 7
url: https://www.desertcart.com.au/products/72681503-infinity-ref-704a-1000w-reference-series-4-channel-amplifier-complete
store_origin: AU
region: Australia
---

# Infinity REF-704A 1000W Reference Series 4-Channel Amplifier with Complete 4 Channels 2500W 4 Gauge Amplifier Installation Wiring Kit and Free Mobile Magnet Phone Holder

**Brand:** infinity pkg
**Price:** A$144
**Availability:** ❌ Out of Stock

## Quick Answers

- **What is this?** Infinity REF-704A 1000W Reference Series 4-Channel Amplifier with Complete 4 Channels 2500W 4 Gauge Amplifier Installation Wiring Kit and Free Mobile Magnet Phone Holder by infinity pkg
- **How much does it cost?** A$144 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/72681503-infinity-ref-704a-1000w-reference-series-4-channel-amplifier-complete)

## Best For

- infinity pkg enthusiasts

## Why This Product

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

## Description

Infinity REF-704A 1000W Reference Series 4-Channel Amplifier with Complete 4 Channels 2500W 4 Gauge Amplifier Installation Wiring Kit and Free Mobile Magnet Phone Holder Product Features: Work in almost any vehicle Power delivered in style Compact footprint High- and low-level inputs Variable crossovers and bass boost ADAS input with channel assignment HALOsonic mixing input Technical Details: 4-channel car amplifier 70 watts RMS x 4 at 4 ohms (100 watts RMS x 4 at 2 ohms) 200 watts RMS x 2 at 4 ohms in bridged mode (4-ohm stable in bridged mode) Class D amp technology variable high- and low-pass filters (32-320 Hz, 12 dB/octave) on front and rear channels preamp and speaker-level inputs preamp outputs ADAS and HALOsonic inputs for advanced integration in select vehicles wiring and hardware not included with amplifier 8-gauge power and ground leads recommended fuse rating: 30A x 2 Signal-to-Noise Ratio≥85dB (ref 1W output @ 4Ω) Max Power1000W Peak System Specifications Power Output, 2Ω100W RMS x 4, <1.0% THD+N Power Output, 4Ω70W RMS x 4, <1.0% THD+N Power Output, 4Ω Bridged200W RMS x 2, <1.0% THD+N

## Features

- About this item
- Package: Infinity REF-704A Amplifier + Complete 4 Channel Amplifier Kit + Free Mobile Holder
- REF-704A: Reference Series 4-Channel Class D Amplifier
- 70 watts RMS x 4 at 4 ohms (100 watts RMS x 4 at 2 ohms)
- 200 watts RMS x 2 at 4 ohms in bridged mode (4-ohm stable in bridged mode)
- Complete 4 Channels 2500W 4 Gauge Amplifier Installation Wiring Kit
- ›See more product details

## Images

![Infinity REF-704A 1000W Reference Series 4-Channel Amplifier with Complete 4 Channels 2500W 4 Gauge Amplifier Installation Wiring Kit and Free Mobile Magnet Phone Holder - Image 1](https://m.media-amazon.com/images/I/81U-vI4o4jL.jpg)
![Infinity REF-704A 1000W Reference Series 4-Channel Amplifier with Complete 4 Channels 2500W 4 Gauge Amplifier Installation Wiring Kit and Free Mobile Magnet Phone Holder - Image 2](https://m.media-amazon.com/images/I/81kL4yiCkdL.jpg)
![Infinity REF-704A 1000W Reference Series 4-Channel Amplifier with Complete 4 Channels 2500W 4 Gauge Amplifier Installation Wiring Kit and Free Mobile Magnet Phone Holder - Image 3](https://m.media-amazon.com/images/I/61r7OtZ485L.jpg)
![Infinity REF-704A 1000W Reference Series 4-Channel Amplifier with Complete 4 Channels 2500W 4 Gauge Amplifier Installation Wiring Kit and Free Mobile Magnet Phone Holder - Image 4](https://m.media-amazon.com/images/I/61uAiwrim3L.jpg)
![Infinity REF-704A 1000W Reference Series 4-Channel Amplifier with Complete 4 Channels 2500W 4 Gauge Amplifier Installation Wiring Kit and Free Mobile Magnet Phone Holder - Image 5](https://m.media-amazon.com/images/I/71fhqGNL8nL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐ 







  
  
    No phone hold
  

*by D***. on Reviewed in the United States on October 21, 2018*

I got the amp first before all wiring kit. Did not get the phone hold but that's alright.

### ⭐⭐⭐⭐⭐ 







  
  
    Nice amp for the price
  

*by R***  on Reviewed in the United States on October 5, 2019*

Got the amp quick!! Looks good.. Haven’t installed it yet.

### ⭐⭐⭐⭐ 







  
  
    it sounds good and doe's what it should
  

*by A***R on Reviewed in the United States on October 18, 2018*

I bought this for my Hyundai Santa fe, it sounds good.  Hooked it up to new infinity speakers.  I only wish now that I had gotten the 5 channel amp so that I could have hooked up a sub to it.  but over all happy with my purchase.

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**Shop now:** [https://www.desertcart.com.au/products/72681503-infinity-ref-704a-1000w-reference-series-4-channel-amplifier-complete](https://www.desertcart.com.au/products/72681503-infinity-ref-704a-1000w-reference-series-4-channel-amplifier-complete)

---

*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-02-23*