---
product_id: 75076969
title: "Gravity GBR300.4DM True 600-Watt RMS Micro Ultra Compact Digital 4-Channel Full Range Amplifier with RCA Stereo Input - IPX65 Waterproof - Perfect for Motorcycle, RV, ATV, Car, Boat, Marine"
brand: "gravity audio"
price: "R$2044"
currency: BRL
in_stock: true
reviews_count: 8
url: https://www.desertcart.com.br/products/75076969-gravity-gbr300-4dm-true-600-watt-rms-micro-ultra-compact
store_origin: BR
region: Brazil
---

# Gravity GBR300.4DM True 600-Watt RMS Micro Ultra Compact Digital 4-Channel Full Range Amplifier with RCA Stereo Input - IPX65 Waterproof - Perfect for Motorcycle, RV, ATV, Car, Boat, Marine

**Brand:** gravity audio
**Price:** R$2044
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Gravity GBR300.4DM True 600-Watt RMS Micro Ultra Compact Digital 4-Channel Full Range Amplifier with RCA Stereo Input - IPX65 Waterproof - Perfect for Motorcycle, RV, ATV, Car, Boat, Marine by gravity audio
- **How much does it cost?** R$2044 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/75076969-gravity-gbr300-4dm-true-600-watt-rms-micro-ultra-compact)

## Best For

- gravity audio enthusiasts

## Why This Product

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

## Description

Gravity GBR300.4DM True 600-Watt RMS Micro Ultra Compact Digital 4-Channel Full Range Amplifier with RCA Stereo Input - IPX65 Waterproof - Perfect for Motorcycle, RV, ATV, Car, Boat, Marine

## Product Details

- **Item dimensions L x W x H:** 1.5 x 4.25 x 9.5 inches
- **Voltage:** 3 Volts
- **Manufacturer:** Gravity Audio
- **Maximum Supply Voltage:** 3 Volts (DC)
- **Mounting Type:** Surface Mount

## Images

![Gravity GBR300.4DM True 600-Watt RMS Micro Ultra Compact Digital 4-Channel Full Range Amplifier with RCA Stereo Input - IPX65 Waterproof - Perfect for Motorcycle, RV, ATV, Car, Boat, Marine - Image 1](https://m.media-amazon.com/images/I/61yOM1KcbXL.jpg)
![Gravity GBR300.4DM True 600-Watt RMS Micro Ultra Compact Digital 4-Channel Full Range Amplifier with RCA Stereo Input - IPX65 Waterproof - Perfect for Motorcycle, RV, ATV, Car, Boat, Marine - Image 2](https://m.media-amazon.com/images/I/71xqRN1AocL.jpg)
![Gravity GBR300.4DM True 600-Watt RMS Micro Ultra Compact Digital 4-Channel Full Range Amplifier with RCA Stereo Input - IPX65 Waterproof - Perfect for Motorcycle, RV, ATV, Car, Boat, Marine - Image 3](https://m.media-amazon.com/images/I/71Ay1RI2L8L.jpg)
![Gravity GBR300.4DM True 600-Watt RMS Micro Ultra Compact Digital 4-Channel Full Range Amplifier with RCA Stereo Input - IPX65 Waterproof - Perfect for Motorcycle, RV, ATV, Car, Boat, Marine - Image 4](https://m.media-amazon.com/images/I/61I8+bqV5iL.jpg)
![Gravity GBR300.4DM True 600-Watt RMS Micro Ultra Compact Digital 4-Channel Full Range Amplifier with RCA Stereo Input - IPX65 Waterproof - Perfect for Motorcycle, RV, ATV, Car, Boat, Marine - Image 5](https://m.media-amazon.com/images/I/71GmJbjRPVL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ This is it..
*by P***S on April 15, 2025*

Great sound quality and loud. More than I expected

### ⭐⭐⭐⭐ Well made.
*by I***R on December 21, 2023*

Seems well put together. Only complaint is that the acrylic over the settings cracked very easily. But overall a nice product so far.

### ⭐⭐⭐⭐⭐ One of the best motorcycle amplifier I have ever purchased
*by P***. on August 8, 2018*

This amplifier is incredible good power and a good size also easy insulation connections have named location for DYI I have six. 6 x 9‘s and 4 bullet tweeters I am running the amplifier at 2ohm stable Power and am loving it .ground and power Cable could be a little longer but was easy to extendThis amplifier doesn’t run hot just gets warm The top review was just before I did 800 miles plus on 80% volume and I am impressed and I will buy again 9/3/18

## Frequently Bought Together

- Gravity GBR300.4DM True 600-Watt RMS Micro Ultra Compact Digital 4-Channel Full Range Amplifier with RCA Stereo Input - IPX65 Waterproof - Perfect for Motorcycle, RV, ATV, Car, Boat, Marine
- DteeDck RCA Splitter 1 Female to 2 Male, 2 Pack - RCA Audio Video Cable Splitter Adapter, Dark Blue
- DS18 BTTWO Bluetooth Receiver - IP65 Waterproof Rated, BT 4.0, Remote Trigger Output, Stero Male RCA Output - Allows Connect & Play Integration to Your Audio Device

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**Shop now:** [https://www.desertcart.com.br/products/75076969-gravity-gbr300-4dm-true-600-watt-rms-micro-ultra-compact](https://www.desertcart.com.br/products/75076969-gravity-gbr300-4dm-true-600-watt-rms-micro-ultra-compact)

---

*Product available on Desertcart Brazil*
*Store origin: BR*
*Last updated: 2026-02-02*