Pioneer GM-D1004
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Item# 40059 / Condition:  Brand New    Review this product

Pioneer GM-D1004

Slim Series 400W Class FD 4-Channel Digital Amplifier

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Compact Design

Whether you call it “compact” or “micro” the GM-D1004 will wear the name proudly. With the size equivalent to slightly smaller than a standard red brick, you’ll have no problem finding a place to mount it or conceal it behind our short chassis Digital Media Receivers stereos, glove box or even in the center console.

Compact Design

Flexible Connectivity

For DIYers, the GM-D1004 amplifier is not only small and powerful but it’s easy to install. Simply connect power and ground at the radio and get more installation flexibility using hi-level or low-level inputs with a signal sensing remote turn on so you can use it in combination with a factory or aftermarket headunit.

Flexible Connectivity


  • Number of Channels: 4
  • Amplifer Class: Class FD
  • Maximum Power Output: 400W
  • Maximum Power Output at 2 W: 100W x 4
  • Maximum Power Output at 4 W: 100W x 4
  • Maximum Power Output - Bridged at 4 W: 200W x 2
  • Nominal Power (RMS) Output at 2 W: 45W x 4
  • Nominal Power (RMS) Output at 4 W: 45W x 4
  • Nominal Power (RMS) Output - Bridged at 4 W: 90W x 2
  • Frequency Response: 10 Hz to 40 kHz
  • Total Harmonic Distortion (THD): < 0.05% (1 kHz)
  • Signal-to-Noise (SN) Ratio: 75 dB
  • Fuse Rating: 15 Amps


  • RCA Inputs: 4-Ch.
  • Speaker Level Inputs: 
  • Crossover Type: LPF/HPF
  • Low-Pass Crossover Frequency: 80 Hz (LPF/OFF/HPF)
  • Low Pass Slope (dB/octave): -12 dB/octave
  • High-Pass Crossover Frequency: 80 Hz (LPF/OFF/HPF)
  • High-Pass Slope (dB/octave): -12 dB/octave
  • Automatic Signal Sensing and Turn-On
  • Terminal Type: Removable
  • Load Impedance Allowance (W): 1 to 8
  • Bridgeable
  • MOSFET Output Selection
  • Protection Control System
  • Dimensions (WxHxD)(inches): 7-1/8" x 1-1/2" x 2-1/2"
  • UPC: 884938265652
  • Weight: 27.1
*Warranty: 1 Year warranty.
1 Year warranty from implies that repairs must be returned to, not the manufacturer. More information can be found in our help section under returns & warranties.
What's not covered : Misuse, abuse, defacement, physical damage of any kind, and improper installation / operation. Video and multimedia equipment with damaged or cracked screens.Subwoofers and speakers are not warranted against being blown, burned or abused.