Car Audio Amplifiers

Pioneer Car Audio Amplifier 4 Channels Amplifier Class FD Code: GM-D9704

Key features:

  • Maximum RMS power rating: 1600W
  • Output power 4Ω: 130W x 4
  • Output power 2Ω: 200W x 4
  • Output power 1Ω: 130W x 4
  • Frequency range: 10Hz - 50kHz
  • Dimensions: 302 x 60 x 215mm
See Description & Specifications

290 00 €
Delivery by Fri, 13 Nov
14,00 €   shipping cost
Sent from Greece
From Soundimage 5.0 (38)

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Reviews (18)

Reviews

  1. 18
  2. 4 stars
    0
  3. 3 stars
    0
  4. 2 stars
    0
  5. 1 star
    0
Review this product
  • Sound quality
  • Volume
  • Construction quality
  • Large number of inputs/outputs
  • Bass quality
  • Value for money

What do users say? AI-generated summary

Users rate the amplifier very highly, mainly praising its clean, powerful sound and compact, unobtrusive size. They say it noticeably improves the sound with factory or upgraded head units and speakers, while fitting easily into tight spaces. However, some point out that the gain isn’t adjustable and that care is needed with the wiring to avoid noise.

Reviews photos

Reviews photos
Reviews photos
Reviews photos
Reviews photos
Reviews photos
Reviews photos

Reviews by our members

  • This review is about a variation of the product

    Installed in a Suzuki Vitara on the factory head unit with hi input and drives a pair of Alpine S2-S65C speakers in the front doors and a pair of S2-S65 speakers in the rear. The RCA output was connected to the active Macrom sub, the SW-250A. Compared to the factory audio system, there’s no comparison—it’s 1000% better.

    +Positives:
    Small size, it fit in the second floor of the trunk, as if it’s not even there
    Class FD, doesn’t heat up, doesn’t require much power
    4x100W RMS @ 4Ohm on each output
    Automatic Hi input detection is very convenient if you don’t want to change the factory head unit
    It has low THD, but since I use it with hi input, unfortunately I can’t enjoy it.

    -Negatives:
    The most important negative is the fact that the speaker output terminals are facing downwards, which makes installation difficult.
    Personally, at this price (289€) I would expect it to have a built-in DSP like some HELIX models.

    Translated from Greek ·
    Did you find this review helpful?
  • litihari6

    Verified purchase

    This review is about a variation of the product

    Very powerful, perfect sound

    Translated from Greek ·
    Did you find this review helpful?
  • litihari6

    Verified purchase

    This review is about a variation of the product

    Simply perfect, the sound took off with the gmd1004 on the dashboard. Then with the gmd8704 I have no words, you just sit and enjoy the sound

    Translated from Greek ·
    Did you find this review helpful?
  • x.xarakas
    5
    5 out of 5 members found this review helpful

    Verified purchase

    This review is about a variation of the product

    The most important thing is that it is discreet, it fits into the car's dashboard, so you don't have the mess in the trunk with cables, etc. It provides that little extra sound that you need... everything is good then

    Translated from Greek ·
    • Sound quality
    • Volume
    • Construction quality
    • Large number of inputs/outputs
    • Bass quality
    • Value for money
    Did you find this review helpful?
  • sotiris.k75
    5
    11 out of 11 members found this review helpful
    This review is about a variation of the product

    But this little gadget rocks. You can hide it wherever you want and it produces a clean, high-quality bass sound!!!

    Translated from Greek ·
    • Sound quality
    • Volume
    • Construction quality
    • Large number of inputs/outputs
    • Bass quality
    • Value for money
    Did you find this review helpful?
  • Vassilis_L
    5
    10 out of 10 members found this review helpful

    Verified purchase

    This review is about a variation of the product

    A satisfactory power amplifier with a small size that can fit in the dashboard. Combined with front speaker replacement, the result is spectacular.
    Drawback - perhaps - the fixed gain, you cannot customize it.
    Pay attention to the power supply connection to avoid "clicks" from the speakers when the engine is off.

    Translated from Greek ·
    • Sound quality
    • Volume
    • Construction quality
    • Large number of inputs/outputs
    • Bass quality
    • Value for money
    Did you find this review helpful?
  • Verified purchase

    This review is about a variation of the product

    Well, Pioneer at its best.
    This says it all!!

    Translated from Greek ·
    Did you find this review helpful?
  • 5
    1 out of 1 members found this review helpful

    Verified purchase

    This review is about a variation of the product

    perfect and powerful

    Translated from Greek ·
    • Sound quality
    • Volume
    • Construction quality
    • Large number of inputs/outputs
    • Bass quality
    • Value for money
    Did you find this review helpful?
  • 5
    1 out of 1 members found this review helpful
    This review is about a variation of the product

    it's worth every penny, very good, plays perfectly

    Translated from Greek ·
    • Sound quality
    • Volume
    • Construction quality
    • Large number of inputs/outputs
    • Bass quality
    • Value for money
    Did you find this review helpful?
  • 5
    2 out of 2 members found this review helpful

    Verified purchase

    This review is about a variation of the product

    small size and great power

    Translated from Greek ·
    • Sound quality
    • Volume
    • Construction quality
    • Large number of inputs/outputs
    • Bass quality
    • Value for money
    Did you find this review helpful?
  • 5
    1 out of 1 members found this review helpful

    Verified purchase

    This review is about a variation of the product

    Reliable in everything

    Translated from Greek ·
    Did you find this review helpful?
  • Verified purchase

    This review is about a variation of the product

  • Verified purchase

    This review is about a variation of the product

    • Sound quality
    • Volume
    • Construction quality
    • Large number of inputs/outputs
    • Bass quality
    • Value for money
  • This review is about a variation of the product

  • Verified purchase

    This review is about a variation of the product

    • Sound quality
    • Volume
    • Construction quality
    • Large number of inputs/outputs
    • Bass quality
    • Value for money
  • This review is about a variation of the product

    • Sound quality
    • Volume
    • Construction quality
    • Large number of inputs/outputs
    • Bass quality
    • Value for money
  • Verified purchase

    • Sound quality
    • Volume
    • Construction quality
    • Large number of inputs/outputs
    • Bass quality
    • Value for money
  • Installed in a Suzuki Vitara on the factory head unit with hi input and drives a pair of Alpine S2-S65C speakers in the front doors and a pair of S2-S65 speakers in the rear. The RCA output was connected to the active Macrom sub, the SW-250A. Compared to the factory audio system, there’s no comparison—it’s 1000% better.

    +Positives:
    Small size, it fit in the second floor of the trunk, as if it’s not even there
    Class FD, doesn’t heat up, doesn’t require much power
    4x100W RMS @ 4Ohm on each output
    Automatic Hi input detection is very convenient if you don’t want to change the factory head unit
    It has low THD, but since I use it with hi input, unfortunately I can’t enjoy it.

    -Negatives:
    The most important negative is the fact that the speaker output terminals are facing downwards, which makes installation difficult.
    Personally, at this price (289€) I would expect it to have a built-in DSP like some HELIX models.

    Translated from Greek ·
    0
  • Very powerful, perfect sound

    Translated from Greek ·
    0
  • Simply perfect, the sound took off with the gmd1004 on the dashboard. Then with the gmd8704 I have no words, you just sit and enjoy the sound

    Translated from Greek ·
    0
  • The most important thing is that it is discreet, it fits into the car's dashboard, so you don't have the mess in the trunk with cables, etc. It provides that little extra sound that you need... everything is good then

    Translated from Greek ·
    5
  • But this little gadget rocks. You can hide it wherever you want and it produces a clean, high-quality bass sound!!!

    Translated from Greek ·
    11
  • See all

Description & Specifications

The Pioneer GM-D9704 car amplifier has 4 channels and uses Class D amplification. Its RMS output power is 130 W per channel at 4 Ω and 200 W per channel at 2 Ω. In bridged mode, it delivers 400 W RMS per channel at 4 Ω or 260 W RMS per channel at 2 Ω.

The variable LPF and HPF allow you to adjust the cutoff frequency. RCA inputs and speaker-level inputs support connection to different audio sources, while the block-type terminals allow you to connect up to 4 subwoofers.

  • Channels: 4
  • Amplifier class: FD
  • RMS output power at 4 Ω: 130 W per channel
  • RMS output power at 2 Ω: 200 W per channel
  • Bridged RMS output power at 4 Ω: 400 W per channel
  • Bridged RMS output power at 2 Ω: 260 W per channel
  • Maximum power: 4 × 260 W at 4 Ω, 4 × 400 W at 2 Ω
  • Total maximum power: 1600 W
  • Frequency response: 10 Hz–50 Hz
  • Variable LPF: Yes
  • Variable HPF: Yes
  • Crossover frequency: 40–500 Hz (-12 dB/oct)
  • RCA inputs: Yes
  • RCA input sensitivity: 0.2–6.5 V
  • Speaker input sensitivity: 0.8–16 V
  • Speaker terminals: Block type
  • Multi-connection terminal: Yes
  • Subwoofer connection: Up to 4 subwoofers
  • Signal-to-noise ratio: 95 dB
  • Dimensions: 252 × 60 × 215 mm

Manufacturer

Product Number
GM-D9704
Number of Channels
4 Channels
Output Power (4 Ohm)
130 watt / channel
Output Power (2 Ohm)
200 watt / channel
Amplifier class
FD

Important information

Specifications are collected from official manufacturer websites. Please verify the specifications before proceeding with your final purchase. If you notice any problem you can report it here.

Reviews (18)

  1. 18
  2. 4 stars
    0
  3. 3 stars
    0
  4. 2 stars
    0
  5. 1 star
    0
Review this product
  • Sound quality
  • Volume
  • Construction quality
  • Large number of inputs/outputs
  • Bass quality
  • Value for money

What do users say? AI-generated summary

Users rate the amplifier very highly, mainly praising its clean, powerful sound and compact, unobtrusive size. They say it noticeably improves the sound with factory or upgraded head units and speakers, while fitting easily into tight spaces. However, some point out that the gain isn’t adjustable and that care is needed with the wiring to avoid noise.

Reviews photos

Reviews photos
Reviews photos
Reviews photos
Reviews photos
Reviews photos
Reviews photos

Reviews by our members

  • This review is about a variation of the product

    Installed in a Suzuki Vitara on the factory head unit with hi input and drives a pair of Alpine S2-S65C speakers in the front doors and a pair of S2-S65 speakers in the rear. The RCA output was connected to the active Macrom sub, the SW-250A. Compared to the factory audio system, there’s no comparison—it’s 1000% better.

    +Positives:
    Small size, it fit in the second floor of the trunk, as if it’s not even there
    Class FD, doesn’t heat up, doesn’t require much power
    4x100W RMS @ 4Ohm on each output
    Automatic Hi input detection is very convenient if you don’t want to change the factory head unit
    It has low THD, but since I use it with hi input, unfortunately I can’t enjoy it.

    -Negatives:
    The most important negative is the fact that the speaker output terminals are facing downwards, which makes installation difficult.
    Personally, at this price (289€) I would expect it to have a built-in DSP like some HELIX models.

    Translated from Greek ·
    Did you find this review helpful?
  • litihari6

    Verified purchase

    This review is about a variation of the product

    Very powerful, perfect sound

    Translated from Greek ·
    Did you find this review helpful?
  • litihari6

    Verified purchase

    This review is about a variation of the product

    Simply perfect, the sound took off with the gmd1004 on the dashboard. Then with the gmd8704 I have no words, you just sit and enjoy the sound

    Translated from Greek ·
    Did you find this review helpful?
  • x.xarakas
    5
    5 out of 5 members found this review helpful

    Verified purchase

    This review is about a variation of the product

    The most important thing is that it is discreet, it fits into the car's dashboard, so you don't have the mess in the trunk with cables, etc. It provides that little extra sound that you need... everything is good then

    Translated from Greek ·
    • Sound quality
    • Volume
    • Construction quality
    • Large number of inputs/outputs
    • Bass quality
    • Value for money
    Did you find this review helpful?
  • sotiris.k75
    5
    11 out of 11 members found this review helpful
    This review is about a variation of the product

    But this little gadget rocks. You can hide it wherever you want and it produces a clean, high-quality bass sound!!!

    Translated from Greek ·
    • Sound quality
    • Volume
    • Construction quality
    • Large number of inputs/outputs
    • Bass quality
    • Value for money
    Did you find this review helpful?
  • Vassilis_L
    5
    10 out of 10 members found this review helpful

    Verified purchase

    This review is about a variation of the product

    A satisfactory power amplifier with a small size that can fit in the dashboard. Combined with front speaker replacement, the result is spectacular.
    Drawback - perhaps - the fixed gain, you cannot customize it.
    Pay attention to the power supply connection to avoid "clicks" from the speakers when the engine is off.

    Translated from Greek ·
    • Sound quality
    • Volume
    • Construction quality
    • Large number of inputs/outputs
    • Bass quality
    • Value for money
    Did you find this review helpful?
  • Verified purchase

    This review is about a variation of the product

    Well, Pioneer at its best.
    This says it all!!

    Translated from Greek ·
    Did you find this review helpful?
  • 5
    1 out of 1 members found this review helpful

    Verified purchase

    This review is about a variation of the product

    perfect and powerful

    Translated from Greek ·
    • Sound quality
    • Volume
    • Construction quality
    • Large number of inputs/outputs
    • Bass quality
    • Value for money
    Did you find this review helpful?
  • 5
    1 out of 1 members found this review helpful
    This review is about a variation of the product

    it's worth every penny, very good, plays perfectly

    Translated from Greek ·
    • Sound quality
    • Volume
    • Construction quality
    • Large number of inputs/outputs
    • Bass quality
    • Value for money
    Did you find this review helpful?
  • 5
    2 out of 2 members found this review helpful

    Verified purchase

    This review is about a variation of the product

    small size and great power

    Translated from Greek ·
    • Sound quality
    • Volume
    • Construction quality
    • Large number of inputs/outputs
    • Bass quality
    • Value for money
    Did you find this review helpful?
  • 5
    1 out of 1 members found this review helpful

    Verified purchase

    This review is about a variation of the product

    Reliable in everything

    Translated from Greek ·
    Did you find this review helpful?
  • Verified purchase

    This review is about a variation of the product

  • Verified purchase

    This review is about a variation of the product

    • Sound quality
    • Volume
    • Construction quality
    • Large number of inputs/outputs
    • Bass quality
    • Value for money
  • This review is about a variation of the product

  • Verified purchase

    This review is about a variation of the product

    • Sound quality
    • Volume
    • Construction quality
    • Large number of inputs/outputs
    • Bass quality
    • Value for money
  • This review is about a variation of the product

    • Sound quality
    • Volume
    • Construction quality
    • Large number of inputs/outputs
    • Bass quality
    • Value for money
  • Verified purchase

    • Sound quality
    • Volume
    • Construction quality
    • Large number of inputs/outputs
    • Bass quality
    • Value for money
  • Installed in a Suzuki Vitara on the factory head unit with hi input and drives a pair of Alpine S2-S65C speakers in the front doors and a pair of S2-S65 speakers in the rear. The RCA output was connected to the active Macrom sub, the SW-250A. Compared to the factory audio system, there’s no comparison—it’s 1000% better.

    +Positives:
    Small size, it fit in the second floor of the trunk, as if it’s not even there
    Class FD, doesn’t heat up, doesn’t require much power
    4x100W RMS @ 4Ohm on each output
    Automatic Hi input detection is very convenient if you don’t want to change the factory head unit
    It has low THD, but since I use it with hi input, unfortunately I can’t enjoy it.

    -Negatives:
    The most important negative is the fact that the speaker output terminals are facing downwards, which makes installation difficult.
    Personally, at this price (289€) I would expect it to have a built-in DSP like some HELIX models.

    Translated from Greek ·
    0
  • Very powerful, perfect sound

    Translated from Greek ·
    0
  • Simply perfect, the sound took off with the gmd1004 on the dashboard. Then with the gmd8704 I have no words, you just sit and enjoy the sound

    Translated from Greek ·
    0
  • The most important thing is that it is discreet, it fits into the car's dashboard, so you don't have the mess in the trunk with cables, etc. It provides that little extra sound that you need... everything is good then

    Translated from Greek ·
    5
  • But this little gadget rocks. You can hide it wherever you want and it produces a clean, high-quality bass sound!!!

    Translated from Greek ·
    11
  • See all
290,00 €
14,00 €   shipping cost