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GM-A6704 4-Channel Bridgeable Car Amplifier Class AB Auto Sensing (1000W Max)

GM-A6704 4-Channel Bridgeable Car Amplifier Class AB Auto Sensing (1000W Max)

5(2 ratings)

Best price now

$140.00at Pioneer ElectronicsChecked Nov 8

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Price facts

  • Last seen at $140.00 at Pioneer Electronics on Nov 8.

Our take on the GM-A6704 4-Channel Bridgeable Car Amplifier Class AB Auto Sensing (1000W Max)

The Pioneer GM-A6704 is a Class AB four-channel car amplifier rated at 60 watts RMS per channel in four-channel mode and 190 watts RMS per channel when bridged to two channels. It can run front speakers on the A channels while the B channels drive a subwoofer, and speaker-level inputs let it work with a factory radio that has no preamp outputs. It suits drivers upgrading stock speakers or adding a sub on a budget who want more clean headroom than a head unit provides. Against smaller two-channel amps it offers more routing flexibility; against premium Class D amps it runs hotter and draws more current for the same output.

Best forUpgrading factory speakers with more clean powerRunning front speakers and a subwoofer from one ampAdding amplification to a factory radio with speaker-level inputsBudget builds that need flexible channel routing
Pros
  • Four channels with 60W RMS each for front and rear speakers
  • Bridges to two channels at 190W RMS each for components or subs
  • Speaker-level inputs work with factory head units
  • A/B channel layout lets one amp drive speakers and a sub
  • Class AB design is simple and widely understood by installers
Cons
  • Class AB runs hotter and is less efficient than Class D
  • 1000W is a peak rating; real output is far lower
  • Needs a stout power and ground wiring kit and good ventilation
  • No built-in DSP or detailed crossover tuning

GM-A6704 4-Channel Bridgeable Car Amplifier Class AB Auto Sensing (1000W Max) prices at every store

  • Pioneer ElectronicsNew

    In stockReturn policy

    $140.00Checked Nov 8
    Visit Pioneer Electronics

About the GM-A6704 4-Channel Bridgeable Car Amplifier Class AB Auto Sensing (1000W Max)

The GM-A6704 is a 4-channel Class AB car amplifier with a maximum output of 1000W. It powers front and rear speakers at 60 watts RMS each, so more detail comes through in your music, even with the volume up to cover road noise.

The amp is bridgeable. You can run front speakers on the "A" channels and combine the "B" channels to drive a subwoofer. In 2-channel mode, it sends 190 watts RMS to each of two component speakers or subwoofers.

Speaker-level inputs let you add the amplifier to a factory-installed audio source that has no pre-amplified outputs.

Channels
4-channel, bridgeable
Class
Class AB
Max power
1000W
4-channel power
60 watts RMS per channel
2-channel power
190 watts RMS per channel
Inputs
Speaker-level inputs

Questions and answers

Is 1000W the real power output?
No. 1000W is the peak (max) rating. The amp is rated 60W RMS per channel in four-channel mode and 190W RMS per channel bridged to two channels.
Can it run speakers and a subwoofer at the same time?
Yes. Use the A channels for front speakers and bridge the B channels to drive a subwoofer, or bridge all four channels into two for components or subs.
Will it work with my factory radio?
Yes, if the radio has no preamp outputs. The speaker-level inputs accept the radio's speaker wires directly.
Do I need a wiring kit?
Yes. You need power and ground cable sized for the amp's current draw, a fuse at the battery, and RCA or speaker-level signal cables.
How is it different from a Class D amp?
Class AB is simpler and often cheaper but less efficient and runs hotter. Class D amps are smaller and cooler but can cost more for the same power.
Where is the GM-A6704 4-Channel Bridgeable Car Amplifier Class AB Auto Sensing (1000W Max) cheapest?
At Pioneer Electronics, for $140.00, as of our latest check.
What do buyers say about the GM-A6704 4-Channel Bridgeable Car Amplifier Class AB Auto Sensing (1000W Max)?
Rated 5 out of 5 from 2 ratings.

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