The Pioneer GM-D1004 is a compact Class-FD 4-channel amplifier delivering up to 400W max power, ideal for upgrading factory systems with clean, efficient power in tight spaces.

🔊 Key Features

• Amplifier Type: Class-FD (Full-Range Digital)

• Channels: 4-channel (bridgeable to 2-channel)

• Maximum Power Output: 400W total

• RMS Power Output:

  • 45W × 4 @ 4Ω

  • 45W × 4 @ 2Ω

  • 90W × 2 bridged @ 4Ω

• Frequency Response: 10Hz – 40kHz

• Total Harmonic Distortion (THD): < 0.05%

• Signal-to-Noise Ratio: > 90 dB

• Crossover Type: Selectable HPF/LPF

• Crossover Frequency Range: 80Hz (fixed), -12dB/octave slope

• Inputs:

  • RCA level input

  • Speaker level input (no adapter needed)

• Auto Signal Sensing & Turn-On: ✅

• Fuse Rating: 15A