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Compact black metal car amplifier with four channels and finned heatsink

hifonics

hifonics A1200.4D ALPHA 1200W 4-channel car amplifier

SKU CH-AMBH-Y2A56

Delivers 1200 watts across four channels with 2-ohm stability and variable crossovers

  • TypeAmplifiers
  • Full-range Super D-Class topology delivers 1200 watts total power
  • Four channels provide 300 watts each at 2 ohms for flexible speaker layouts
  • Bridged mono mode yields 600 watts per channel at 4 ohms for subwoofer duty
  • Variable 12 dB per octave crossovers from 10 Hz to 45 kHz shape the sound precisely
  • Speaker-level inputs accept factory head-unit signals without extra adapters

Compact four-channel amplifier

The Hifonics A1200.4D ALPHA is a full-range Super D-Class amplifier delivering 1200 watts across four channels. It suits car-audio enthusiasts who want a single amplifier to drive front and rear speakers or a bridged subwoofer pair. The compact chassis fits tight mounting locations while providing flexible system configurations.

Efficient build with versatile wiring

Super D-Class topology keeps the heatsink at 9.25 by 5.75 by 2.37 inches, allowing installation under seats or in shallow cavities. Power terminals accept 12 AWG cable and speaker terminals take 18 AWG wire for secure connections. Speaker-level inputs and selectable 4-channel or 2-channel input modes simplify integration with factory or aftermarket head units.

Upgrades basic factory power

This amplifier replaces underpowered built-in head-unit amplification with 150 watts per channel at 4 ohms or 300 watts at 2 ohms. Bridged operation yields 600 watts per pair at 4 ohms for subwoofer duty. The jump is worthwhile when louder, cleaner output and adjustable crossovers from 10 Hz to 45 kHz are needed beyond standard radio power.

Highlights

  • Full-range Super D-Class topology delivers 1200 watts total power
  • Four channels provide 300 watts each at 2 ohms for flexible speaker layouts
  • Bridged mono mode yields 600 watts per channel at 4 ohms for subwoofer duty
  • Variable 12 dB per octave crossovers from 10 Hz to 45 kHz shape the sound precisely
  • Speaker-level inputs accept factory head-unit signals without extra adapters

Specifications

TypeAmplifiers

Questions about this item

What crossover slope and frequency range does the variable high-pass filter use?

The variable high-pass crossover has a 12 dB per octave slope and is adjustable from 20 Hz to 4 kHz in standard mode or 10 Hz to 500 Hz in DUPE mode.

What gauge power and speaker wire do the terminals accept?

The power terminals accept up to 12 AWG wire and the speaker terminals accept up to 18 AWG wire.

How do I set the input mode when running two RCA cables to drive all four channels?

Switch the Input Mode selector to 2CH; the amplifier will then duplicate the front pair to the rear channels.

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