---
product_id: 119490678
title: "GM-A3702 2-channel bridge amplifier, black/red"
brand: "pioneer"
price: "B/.463"
currency: PAB
in_stock: true
reviews_count: 5
category: "Pioneer"
url: https://www.desertcart.com.pa/products/119490678-gm-a3702-2-channel-bridge-amplifier-black-red
store_origin: PA
region: Panama
---

# 500W max power output Auto signal detection & sync Balanced isolator input circuit GM-A3702 2-channel bridge amplifier, black/red

**Brand:** pioneer
**Price:** B/.463
**Availability:** ✅ In Stock

## Summary

> 🎶 Amplify your drive with clean power and effortless sync!

## Quick Answers

- **What is this?** GM-A3702 2-channel bridge amplifier, black/red by pioneer
- **How much does it cost?** B/.463 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/products/119490678-gm-a3702-2-channel-bridge-amplifier-black-red)

## Best For

- pioneer enthusiasts

## Why This Product

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

## Key Features

- • **Noise-Free Clarity:** Balanced isolator input circuit eliminates alternator whine for crystal-clear sound.
- • **Seamless Signal Sync:** Automatically detects input mode and powers on with your receiver for hassle-free setup.
- • **Sleek & Durable Design:** Compact aluminum alloy build in stylish black/red, engineered for lasting performance and easy installation.
- • **Plug & Play Convenience:** Compatible with OEM receivers, no RCA output? No problem—speaker level input auto-detection has you covered.
- • **Power that Packs a Punch:** Delivers a robust 500W output to elevate your car audio experience.

## Overview

The Pioneer GM-A3702 is a 2-channel bridge amplifier delivering up to 500W of clean, distortion-free power. Featuring automatic signal detection, it seamlessly syncs with OEM receivers—even those without RCA outputs—ensuring easy installation and operation. Its balanced isolator input circuit effectively eliminates alternator whine, providing pristine audio clarity. Housed in a durable aluminum alloy chassis with a sleek black/red finish, this amplifier is designed for professional-grade car audio enhancement.

## Description

2-channel bridge amplifier Pioneer amplifiers automatically select the appropriate input signal mode, cinch or speaker mode. When the receiver is turned on, the amplifier will automatically turn on. When connected to an OEM receiver or receiver without RCA output and using the speaker level output, the amplifier automatically senses the input mode and turns on in sync with the receiver. When connected to an OEM receiver or receiver without RCA output via a speaker cable, the amplifier will be switched on at the same time as the receiver. Pioneer amplifiers automatically detect input signal and select RCA level or speaker level.

Review: Clean sound, no alternator whine - Previously I had a Crunch amp and it gives the alternator whine when I press on the accelerator. Tried many ways to fix it with capacitors and better grounding but it can only be fixed by turning down gain all the way. After changing to this, it sounds really clean even with the gain being turned up by default, despite having reused all the old power and grounding cables.
Review: Excellent - Super bien !

## Features

- Maximum Power 500W
- Automatic Signal Detection & On
- Hi-Volt Input Level Control
- Balanced Isolator Input Circuit

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01KKHT4YU |
| Best Sellers Rank | 192,385 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 64 in Car Audio & Video Stereo Amplifiers |
| Brand | PIONEER |
| Customer Reviews | 4.4 out of 5 stars 1,054 Reviews |
| Global Trade Identification Number | 00884938340168 |
| Included Components | 2-Channel amplifier |
| Item Dimensions | 18.1 x 24.3 x 6 centimetres |
| Item Type Name | PIONEER |
| Item Weight | 3.1 Pounds |
| Item dimensions L x W x H | 18.1 x 24.3 x 6 centimetres |
| Manufacturer | Pioneer Electronics USA Inc |
| Material | aluminum alloy |
| Maximum Supply Voltage | 12 Volts (DC) |
| Maximum supply voltage | 12 Volts (DC) |
| Model Number | GM-A3702 |
| Mounting Type | Through-Hole Mount |
| Mounting type | Through-Hole Mount |
| Number of Channels | 2 |
| Output Power | 500 Watts |
| Package Type Name | Pioneer Bridgeable Amplifier ,Black/red |
| Specification Met | CE |
| UPC | 884938340168 |
| Unit Count | 1.0 count |
| Voltage | 12 Volts (DC) |

## Product Details

- **Item dimensions L x W x H:** 18.1 x 24.3 x 6 centimetres
- **Manufacturer:** Pioneer Electronics USA Inc
- **Maximum supply voltage:** 12 Volts (DC)
- **Mounting type:** Through-Hole Mount
- **Voltage:** 12 Volts (DC)

## Images

![GM-A3702 2-channel bridge amplifier, black/red - Image 1](https://m.media-amazon.com/images/I/612Zi83F+nL.jpg)

## Questions & Answers

**Q: Can I use this for speakers 6x9 ? Or is it just for subwoofer?**
A: I use mine with large speakers on our Santa,s Sliegh & they work realy well.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Clean sound, no alternator whine
*by N***K on 8 July 2024*

Previously I had a Crunch amp and it gives the alternator whine when I press on the accelerator. Tried many ways to fix it with capacitors and better grounding but it can only be fixed by turning down gain all the way. After changing to this, it sounds really clean even with the gain being turned up by default, despite having reused all the old power and grounding cables.

### ⭐⭐⭐⭐⭐ Excellent
*by R***O on 5 December 2025*

Super bien !

### ⭐⭐⭐⭐⭐ Great amp, with awesome sound and definite value for the money
*by B***H on 26 December 2025*

Sounds really better than expected. Looks great and inconspicuous. I have mine wired at 2ohms. It holds stable with no drain and no overheating. Easy to connect and the auto on/off feature is great. You'll really enjoy this amp. It provides a great sound over stock any day. And if we're being honest, i actually bought 2!

## Frequently Bought Together

- Pioneer GM-A3702 2-Channel Bridgeable Car Amplifier – 500W Max Power, Class AB
- BOSS Audio Systems KIT2 8 Gauge Complete Car Amplifier Installation Wiring Kit with Power Cables, Ground Cables, Turn-On Wire, Speaker Wire, Terminals
- Scosche LOC2SL Line Output Converter with Remote Control Knob - 2CH High/Low RCA Converter Car Audio - Ideal for Subwoofer Amp - Line Level Converter for Car Stereo - Easy Installation - Quality Sound

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**Shop now:** [https://www.desertcart.com.pa/products/119490678-gm-a3702-2-channel-bridge-amplifier-black-red](https://www.desertcart.com.pa/products/119490678-gm-a3702-2-channel-bridge-amplifier-black-red)

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*Product available on Desertcart Panama*
*Store origin: PA*
*Last updated: 2026-02-22*