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Pioneer GM-D8704

1200W Peak (600W RMS) GM Series Class-FD 4-Channel Amplifier with Remote Bass Knob

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• 100 watts x 4 channel @ 4 ohm
• 150 watts x 4 channel @ 2 ohm
• Bridged: 300 watts x 2 channel @ 4 ohm
• Total RMS Power: 600 watts
• Class FD 1 ohm Stable 4-Channel Amplifier

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Description


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Authorized dealer

Product Details:

  • GM Digital Series Class FD 1 ohm Stable 4-Channel Amplifier
  • RMS Power Rating:
    • 4 ohm: 100 watts x 4 channel
    • 2 ohm: 150 watts x 4 channel
    • Bridged: 300 watts x 2 channel @ 4 ohm
  • Total power output: 600 watts
  • LED Power/Protect Light
  • Wired bass level remote control included
  • Speaker-level (high-level) inputs (Includes adapter)
  • 1 pair of pre-amp outputs
  • Signal sensing remote turn-on
  • 3-way protection circuitry (thermal, overload, and speaker short protection)
  • High quality textured flat panel and tough frame
  • Hi-Res Audio Capable certified
  • CTA-2006 compliant
  • Input sensitivity: 200mV - 6.5 volts
  • Frequency Response: 10 - 50000 Hz
  • Total Harmonic Distortion (THD): 1%
  • Signal to Noise Ratio: 75 dB
  • Variable high-pass filter: 40 - 500 Hz
  • Variable low-pass filter: 40 - 500 Hz
  • Variable Bass Boost: 0 - 18 dB
  • Fuse Rating: 60A
  • 4 AWG gauge amplifier wiring kit is recommended for installation
  • Dimensions: 9-7/8" L x 8-1/2" W x 2-3/8" H
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty
  • MFR #: GM-D8704

Product history:

Pioneer GM-D8704 thumbnail
(newest, current model)
Pioneer GM-D9500F thumbnail
(previous model, replaced by Pioneer GM-D8704)

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Specifications & Details


Key Features
Amplifier Key Features
Bass Boost
Hi-Res Audio Certified
Speaker Level Inputs
Power Specifications - Full Range Channels
RMS Power @ 4 ohms
100 watts x 4 channel
RMS Power @ 2 ohms
150 watts x 4 channel
RMS Power @ 1 ohm
125 watts x 4 channel
Bridged RMS Power
300 watts x 2 channel
Amplifier Specifications
Series
GM Digital Series
Amplifier Class
FD
Number of Channels
4-Channel
Total Peak Power Output
1200 watts
Total RMS Power Output
600 watts
Maximum Input Gauge Size
4 AWG
Minimum Impedance Unbridged
1 ohm
Minimum Impedance Bridged
4 ohms
Frequency Response
10 - 50000 Hz
THD at Rated RMS Power
1%
Speaker Level Inputs
Yes
Preamp Outputs
1 pair
Built-in Crossover
Low-Pass (LP)
High-Pass (HP)
Full (AP)
High-Pass Crossover Frequency
40 - 500 Hz
Low-Pass Crossover Frequency
40 - 500 Hz
Signal-to-Noise Ratio
75 dB
Bass Boost
0 - 18 dB
Remote bass/level controller
Yes
Fuse Rating
30A x 2 
Total Fuse Rating
60
Strappable
No
Sonic Certified Amplifier
Not Tested
Amp Bluetooth Connectivity
No
Hi-Res Certified
Yes
Low-Level Input Sensitivity
200mV - 6.5 volts
What is in the box?
Paperwork
User manual
Warranty/Registration card
WITB: Amplifiers
Amplifier
Wired gain knob (wire attached)
Mounting screws (4)
Allen wrenches (2)
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

GM-D8704

Weight:

5.00lbs

Internal SKU:

gmd8704

Internal Product ID:

169003

Customer Ratings & Reviews


Pioneer GM-D8704 thumbnail image

5 star
80%
4 star
17%
3 star
3%
2 star
0%
1 star
0%



Durability
4.8
Value
4.9
Features
4.6
Design
4.7
Usability
4.8

Customer Reviews

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jhay420

The following review is for a previous version (GM-D9500F).

Bad a** lil amp 4 the money!!! Pushin 6.5's, 5.25's, and 4x6 plates! Will buy another 4 5's n plates tho!! def worth the money!!!

By jhay420 on October 19, 2010

50 found this helpful


Good value amplifier!

The following review is for a previous version (GM-D9500F).

This amp has a great sound, small footprint, and low energy consumption (class D "digital" amp). It is a no frills amplifier that puts all its power into sound (not flashy lights and other bells and whistles). This amp is a great value for the money. The highs could be a little more clear, but for the price I don't think there's a better digital 4-channel amp on the market. Pioneer did a great job with this one.

Since it's a new amp, I can only guess on its durability based on Pioneer's track record.

The only downside I can see is that the amp has the "old style" connections for power, ground and speakers, not the newer, more convenient allen wrench connections. Presumably this was done by Pioneer to save money, passing the savings on to the consumer. That, with some lack of definition in the high end, is the only reason I ranked it "4" instead of "5". In actuality, I'd rank it "4.5" if this were an option.

By Audio Ollie on February 19, 2010

48 found this helpful


Great Amp in a Small Package

The following review is for a previous version (GM-D9500F).

This amp replaced a much older, larger, and less powerful Pioneer 4-channel model I had been using. I continue to use 2 channels to power my front (component) speakers, and bridge the other two channels for a trunk mounted sub in my 09 Civic Si.

Another advantage is how much cooler it runs. This isn't really a requirement for me due to where I've mounted it, but for those that are considering mounting in a confined space like behind or under a seat, it could avoid a melt down (had that problem with a Sony amp).

It took a while to "balance out" the gain and high/low pass filters for optimal sound and performance, but I'm really pleased with the results.

By Tom on December 7, 2011

46 found this helpful


Great Amp

The following review is for a previous version (GM-D9500F).

I have this amp installed with a Pioneer double din 4200. I have two sets of the Infinity Kappa Components. The sound is incredible. I had each wired to one channel, but the amp is REALLY under rated. I already blew two sets. Luckily there were replace by Infinity. Now I have a set wired to one channel so I am only using two channels and they still sound great at only half the gain.

By Chile on November 16, 2010

47 found this helpful


Big performance, small package

The following review is for a previous version (GM-D9500F).

If you have space or power requirement considerations, this amp is the solution. It draws less current than comparable output amps, and is small enough to fit in tight spaces. Very clean sound, adequate power to drive 4, 2 ohm speakers, nicely overcomes road and exhaust noise in my Corvette convertible at highway speeds with the top down. Great value.

By Mike on February 20, 2012

45 found this helpful


Great Buy!

The following review is for a previous version (GM-D9500F).

I bought this to power my Polk 6501 component speakers and the 651s in the rear. So far so good, amp is very compact and powerful. The polks definitely scream hooked up to this thing, thank you SonicElectronix for a killer deal.

By Jake on January 19, 2012

45 found this helpful


Great little amp.

Can not argue about the power you get for the price.

By Anonymous on September 18, 2019

43 found this helpful


Good To Go

The following review is for a previous version (GM-D9500F).

An excellent out of the box, plug-n-play kind of amp. Very compact, stealthy. It's sturdy, durable and you can easily swear on its build quality. Above all, looks good too. Performance? Well, I used a couple of amps and this one didn't need any kinda tweaking, as if it just understands what speakers it has to drive.

By Viper Handler on December 8, 2011

44 found this helpful


Great sound

Very powerful. Clean sound as the highs have more detail than the clarion xc1410 I was using.

By Sanford on March 31, 2020 Checkmark Icon Verified purchase

41 found this helpful


Better than i Expected

The following review is for a previous version (GM-D9500F).

This works great, have been useing it for 6 months now and am very pleased.

By KC on January 17, 2012

43 found this helpful




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