• GM-A4704



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4-Channel Bridgeable Amplifier (520W)

Compact power.

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.


4-channelcombine impressive power with big sound for a loud, clear and distortion-free music experience
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Full specifications

Main Features

Chassis size (W x H x D) 326(W) x 60(H) x 215(D)
Unit weight 2.0
Speaker Terminals Screw-type
Speaker Input Level 3 - 26 V
Max. current consumption 20.5A
Maximum power 520W (Bridged) or 2 x 80W (4 Ω) or 4 x 130 W (2 Ω)
CEA 2006 Power 2 x 130W (4 Ω)
Continuous power output 4 x 40W (4 Ω) or 2 x 130W (4Ω bridged) or 4 x 65 W (2 Ω)
Load impedance capability 2-8 ohm allowable (stereo)
Frequency response 10Hz ~ 70kHz (+0dB , -3dB)
Distortion < 0.05 %
S/N ratio > 94 dB
LPF 80 Hz (-12 dB/oct)


High Voltage Input 300 mV - 6.5 V