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Pioneer GM-DX874 Amplifier - Image 1
Pioneer GM-DX874 Amplifier - Image 2
PIONEER

Pioneer GM-DX874 Amplifier

Model: GMDX874UPC: 884938421843
Lowest at Amazon
$195.44 at Amazon
Lowest at any Popular Retailer
$149.95 at Walmart

Where to Buy

Prices last updated: April 29th 2026 8:02 pm

Pros

  • Provides solid power for a 10" subwoofer and rear deck speakers.
  • Greatly improves sound quality of existing stereo systems, like "Bang and Olufson."
  • Works effectively with a prmp DSP for optimal signal processing.
  • High signao-noise ratio above 88dB for incredible sound quality.
  • Supports Hes frequency, enhancing sound clarity.
  • Effective low pass and high pass filters for custom tuning.
  • Provides 100 watts per channel, though it may exceed power requirements for some.
  • Offers great value as a miange amplifier with strong performance.
  • Works well with brands like Rockford Fosgate and Kenwood speakers.
  • Convenient gain setting adjustments before distortion.

Cons

  • May enter protect mode for unexplained reasons.
  • Gain adjustments can be confusing and not intuitive.
  • Requires wiring adjustments with speaker plugs rather than simple RCA output.
  • Some reviews indicated the amplifier did not perform as advertised.
  • Instances of the amplifier being defective, affecting channel performance.
  • Overall frustration due to ineffective prmp output for subwoofers.
  • Experience with prior brands noted as more straightforward and reliable.
  • Unexpected and difficulo-interpret oscilloscope waves.

Bottom Line

The Pioneer GM-DX874 Car Amplifier delivers a commendable balance of power and audio clarity, making it a solid choice for those enhancing their vehicle audio systems on a budget. However, potential users should be prepared for some installation and tuning challenges, and be aware that not all experiences were positive, with some reports of defects affecting performance. Despite these issues, if the feature set aligns with your needs, it's worth considering, keeping in mind that an upfront test might help mitigate unexpected inconveniences.

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What Reviewers Are Saying

Praised
decent power10%
solid amp10%
Criticized
gain is weird10%
defective10%
does not perform10%
plugging issues10%
used condition10%
bad sound quality10%

Discussion

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