4-channel car amplifier 40 watts RMS x 4
Item #: 130GMA4604
Your price: $129.99 Earn up to 130 Rewards points
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Item #: 130GMA4604
Your price: $129.99 Earn up to 130 Rewards points
Many people never think to upgrade their car's audio system, suffering with subpar sound when they listen to music. Pioneer's GM-A4604 4-channel amplifier will greatly improve the sound quality in your vehicle, so you'll look forward to spending time on the road. This punchy Pioneer amp will power your front and rear speakers with 40 watts RMS each, which is a huge jump over the power supplied by your car radio. You'll hear more of the little details in your music, even when you turn your system up to compete with the road noise.
You can also put this versatile amp into 2-channel mode to send up to 120 watts RMS each to a couple of component speakers or subwoofers. Switchable 80 Hz high- and low-pass filters on the A channels help take the rumble away from full-range speakers or the sizzle away from a sub. The B channels sport variable high-and low-pass filters so you can better adjust the sound for critical front soundstaging or a finely-tuned bass. Speaker-level inputs allow you to add the GM-A4604 to a factory radio. This amp's performance features and reasonable price make it a great choice for almost any vehicle needing a sonic upgrade.
You might think you don't need an amp because you have a 400-watt system in your car, or because your new stereo puts out 50 watts a channel. But those are peak wattage ratings, which may boil down to 15 or 20 watts per channel, using the more realistic RMS rating. An amp sends your speakers the power they need to deliver your music with clarity and impact, whether you're using factory speakers or high-performance components. And low-frequency reproduction requires lots of power, so an amp is an absolute must if you're adding a sub to your system.
Great amp as far as clean sound and powerful delivery
Excellent quality better price
Pros: Small ,appropriate output and good quality
Installed this amp in a 2010 Mazda 5 with the factory GPS head unit. Paired it with 2 pair of Pioneer TS-A6885R speakers. It sounds nice, crisp and clean. Really happy with this amp and the speakers.
Pros: Speaker level inputs, perfect match for a factory unit and 2 pair of speakers.
Easy to install. Great sound....really helped out my system.
Pros: Good directions...great tech support.
Cons: Unit was a tight fit under seat.
Just installed a Pioneer GM-A4604 4-channel amp in my friends car and it sounds great. Plenty of power and punch now!
Pros: Sounds and Looks Great...
sounds great, runs 4 6x8 speakers with power to spare. I give it a 5 star rating
Pros: Good price, great quality
Great sounding Amp well worth the money sounds great clear sound
Pros: Good brand
Got this amp to power 4 replacement 5X8 speakers. Great stock upgrade.
Pros: Powers multiple channels
Wonderful amp to run full range speaker,...
Pros: Great sound for the price
|RMS Power Output (Watts x Channels)||
40 x 4
|Peak Power Output (Watts x Channels)||120 x 4|
|Power at 2 Ohms (Watts x Channels)||60 x 4|
|Bridged Power (Watts x Channels)||120 x 2|
|Minimum Impedance Bridged||4|
|Minimum Impedance Unbridged||2|
|Best Frequency Response||10-70K Hz|
|THD at Rated RMS Power||1%|
|Signal to Noise Ratio||78 dB|
|Low-Pass Crossover Frequency||40-500 Hz|
|Low-Pass Slope (dB/octave)||12 dB/octave|
|High-Pass Crossover Frequency||40-500 Hz|
|High-Pass Slope (dB/octave)||12 dB/octave|
|Bass Boost Frequency||N/A|
|Speaker Level Inputs||Harness|
|Parts Warranty||1 Year|
|Labor Warranty||1 Year|
CEA-2006 Compliant: CEA-2006 is a system of testing and measurement methods for mobile audio amplifiers. This voluntary standard advocates a uniform method for measuring an amplifier's RMS power output and signal-to-noise ratio. The criteria for measuring power uses a DC input voltage of 14.4 volts and the RMS power output is measured into a 4Ω load, with 1% or less Total Harmonic Distortion plus noise (THD+N), and over a frequency range of 20 Hz to 20 kHz (for full range amplifiers). Signal-to-Noise ratio is measured in weighted absolute decibels (dBA) at a reference of 1 watt into 4Ω. CEA-2006 standards allow consumers to compare amplifiers on an equal basis. Using CEA-2006 criteria, the Pioneer GM-A4604 is rated at 40 watts RMS x 4 channels, with a 78 dBA signal to noise ratio.
Specifications: The manual also lists these non CEA-2006 compliant specifications:
Gain Control: The A and B halves of the four channel amp have independent gain controls. To accommodate the varying range of signal levels coming from today's factory and aftermarket radios, the input gains are adjustable (300mV-6.5V line level, 3V-26V speaker level).
Gain Control Caution: If the gain control level is set too high, Pioneer's Gain Control Caution feature will automatically reduce the amplifier's output until the headunit volume is decreased to acceptable levels. This added layer of protection helps prevent damage to the amplifier and the connected speakers due to improper gain control adjustments.
Crossovers: The A and B sections of the amplifier also have independent crossover circuits:
Power Connections: The power and ground connections are 0.54" wide screw terminals, the remote turn-on screw terminal is 0.325" wide. A Phillips-head or flat blade screw driver (not included) is required to tighten/loosen the terminals. Spade connectors are recommended for the power, ground, and remote wires.
Speaker Connections: The speaker screw terminals are 0.325" wide. A Phillips-head or flat blade screw driver (not included) is required to tighten/loosen the terminals. Spade connectors are recommended for the speaker wires.
RCA Input: The amplifier features two pair of stereo RCA line level inputs, left/right A and left/right B.
Speaker Input: The included four channel speaker level input harness allows you to connect your OEM radio (or aftermarket radio that does not have the typical RCA-type outputs) without having to buy an adapter.
Input Select: When using only one pair of RCA inputs, set the Input Select switch to 2CH to send the one pair of inputs to both the A and B sections of the amp.
Auto Power On: When using the speaker level input, a circuit senses the input signal and turns the amp on automatically. This feature makes it easier to add an amplifier to a factory radio or to a receiver with no preamp outputs.
Fuse: The amp is protected by a single 30-amp ATO blade fuse.
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yes it definitely is. With this amp I never have to turn my head unit past 14 out of 35. and thats with all 4 windows down [ AUSTIN T Jul 20, 2015 ]
Thanks for your question. For information on selecting the best amp for your subs and speakers, I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They will be able to help determine the differences between the amp models and help you make the best choice for your system. [ Greg Jul 20, 2015 ] Staff
Oem head unit no but aftermarket head unit yes you could do that [ RYAN Feb 04, 2015 ]
Thanks for your question Hiram. You'll be happy to know that you can certainly run the amp this way. It is a great solution for many systems. [ Jeff Dec 16, 2013 ] Staff