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Australian Pioneer Warranty
Purchase Guarantee (see T&C's)
4-Ch Class AB Bridgeable Amplifier
520W Maximum Power
40W x 4 RMS Output - 4Ω
Automatic signal sensing and Turn-ON
Variable high pass filter
Speaker level inputs

Tech Specs

RCA Inputs: 4-CH
Amplifier Class: Class AB
Hi-Res Certified: No
Bridgeable: Yes
Warranty: 1 year
Speaker Level Input: Yes
Fuse Rating: 30A x 1
Bass Boost Remote: No
Automatic Signal Sensing and Turn-On: Yes
Hi-Volt Input Level Control: 0.3V to 6.5V (RCA in), 3.0V to 26V (SP in)
Terminal Type: Screw
Load Impedance Allowance (Ohms): 2 tp 4
Protection Control System: Yes
Dimensions: 326(W) X 60(H) X 215(D) mm
Continuous Power (RMS) Output @ 1Ω: N/A
Continuous Power (RMS) Output @ 2Ω: 65W x 4
Continuous Power (RMS) Output @ 4Ω: 40W x 4
Continuous Power (RMS) Output - Bridged @ 4Ω: 130W x 2
Low-Pass Crossover Frequency: 80 Hz
Low-Pass Slope (dB/octave): -12db/oct (A/B CH)
High-Pass Crossover Frequency: 40 Hz to 500 Hz
Bass Boost Frequency: 50Hz
Bass Boost Level: 0/6/12dB
Frequency Response: 10Hz ~ 70kHz (+0dB , -3dB)
Total Harmonic Distortion (THD): <0.05% ( 10W, 1kHz)
Signal-to-Noise (SN) Ratio: >94 dB

Overview

A combination of great design and massive power, the GM-A4704 amplifier gives you total installation freedom and no distortion. With a one-body heat sink and gain adjustment of up to 6.5V, you can turn your in-car audio experience into the sound staging environment that you’re looking for. This 4-channel amp allows you to drive multiple speakers and subwoofers, it’s also bridgeable to power a single sub.

Features

VARIABLE HIGH PASS FILTER

Variable HPF (high pass filter) allow for adjustable frequency from 40 Hz to 500 Hz* and greater car audio system flexibility according to subwoofer characteristics and personal listening preference.

GROWING POWER, SHRINKING SIZE

New Pioneer amps brilliantly integrate high-power performance superior to that of previous models in space-efficient sizes for flexibility of installation in various car cabins.

AUTOMATIC SIGNAL SENSING & TURN ON

- Pioneer amplifiers automatically select the proper input signal mode, either RCA or speaker level. When the receiver is turned on, the amplifier automatically turns on. When connected to an OEM receiver or a receiver without RCA output and utilizing speaker-level output, the amp automatically senses the input mode and powers up in sync with the receiver.

- When connected to an OEM receiver or a receiver without RCA output using a speaker wire, the amplifier is turned on at the same time as the receiver. Pioneer’s amplifiers automatically detect the input signal and select the RCA level or speaker level.

Pioneer Electronics

Pioneer is a Japanese multinational corporation founded in 1937 that specializes in digital entertainment products. It's one of the most trusted brands in practically any field of car audio. With the renowned innovation, persistence and integrity of Japanese businesses, you can expect the latest technology and the highest possible quality from Pioneer car audio products.