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Compact black monoblock car amplifier with silver heatsink fins and terminal block

WUQ

WUQ CT-400.1D 400W Class D Monoblock Car Amplifier

SKU CH-X6XB-6QSEP

Compact Class D monoblock delivers 400 W RMS at 1-ohm, 300 W at 2-ohm and 150 W at 4-ohm with a 0–320 Hz response and built-in bass knob

  • TypeAutomotive Accessories
  • Delivers 400 watts RMS at 1-ohm load for powerful bass output
  • Provides 300 watts RMS at 2-ohm load and 150 watts at 4-ohm load for flexible wiring
  • Frequency response extends to 320 Hz with included bass knob for precise low-frequency control
  • Compact chassis design enables installation in tight vehicle spaces without sacrificing performance
  • Four-way protection circuitry guards against high voltage, low voltage, over current and high temperature

Compact Class D Monoblock

The WUQ CT-400.1D is a mono car audio amplifier built for subwoofer systems. It delivers 400 watts RMS at a 1-ohm load, 300 watts at 2 ohms and 150 watts at 4 ohms, all measured at 14.4 volts. Its small chassis fits tight spaces while a supplied bass knob lets you adjust low-frequency output from the driver's seat. Buyers seeking multi-channel amplification for full-range speakers should look elsewhere.

Verify Electrical And Load Compatibility

Confirm your subwoofer wiring presents a stable 1-ohm, 2-ohm or 4-ohm load to match the rated output points. Ensure the vehicle charging system can sustain 14.4 volts under load so the amplifier reaches its specified power. Check that your head unit provides a low-level RCA signal or that a line-output converter is available. The unit includes four-way protection against high voltage, low voltage, over-current and over-temperature faults.

Upgrade From Lower-Power Mono Amps

This amplifier replaces smaller monoblocks that cannot drive low-impedance loads at high current. The jump is worth it when your subwoofer setup demands 400 watts RMS at 1 ohm and the existing amp clips or overheats. The Class D topology and proprietary heat dissipation keep the chassis cool during extended play, reducing thermal shutdown risk compared to less efficient designs.

Highlights

  • Delivers 400 watts RMS at 1-ohm load for powerful bass output
  • Provides 300 watts RMS at 2-ohm load and 150 watts at 4-ohm load for flexible wiring
  • Frequency response extends to 320 Hz with included bass knob for precise low-frequency control
  • Compact chassis design enables installation in tight vehicle spaces without sacrificing performance
  • Four-way protection circuitry guards against high voltage, low voltage, over current and high temperature

Specifications

TypeAutomotive Accessories

Questions about this item

Does the CT-400.1D include wiring or only the amplifier and bass knob?

The package contains the monoblock amplifier and a bass knob for level control. Power cable, ground wire, RCA leads, speaker wire and fuse holder are not included and must be purchased separately.

Which impedance should I match to get 400 watts RMS from this amp?

Wire your subwoofer or subwoofers to present a 1-ohm load at the amplifier terminals; the CT-400.1D delivers 400 watts RMS at 1 ohm, 300 watts RMS at 2 ohms and 150 watts RMS at 4 ohms, all measured at 14.4 volts.

What does the 0–320 Hz range mean when the amp is driving a subwoofer?

The amplifier passes only bass frequencies up to 320 Hz, so it feeds the subwoofer without sending mid-range or treble content that the driver cannot reproduce cleanly.

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