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Infinity Primus 9004A 880W Peak 4/3/2 Channel Car Audio Amplifier

Infinity Primus 9004A 880W Peak 4/3/2 Channel Car Audio Amplifier

Regular price RM820.00
Regular price RM999.00 Sale price RM820.00
Sale Sold out

Infinity Primus 9004A 880W Peak 4/3/2 Channel Car Audio Amplifier

Infinity Primus Amps are available in a variety of configurations, delivering the right power and number of channels for full-range and subwoofer applications. For more than four decades, Infinity has made the audio experience a lot more satisfying for the car audio enthusiast. With a broad array of loudspeakers, amplifiers and subwoofers available, you can drive with ease and exhilaration. These compact amps are equipped with all the important inputs and user controls including a bass EQ as well as LPF and HPF crossover controls for tailoring sound to suit the characteristics of different vehicles. The Primus Amps are easily installed and amazingly reliable – and once they turn on, they’ll make a transducer sit up and sing. 


Value Engineered

Primus amplifier provides true Infinity performance at an affordable price while now lacking the features needed to properly tune and optimize performance.


Compact footprint

With it becoming more and more difficult to find spacious locations for amplifier mounting, Primus has been developed in a small compact form factor to allow more location versatility.


Full On-Board Protection

Primus amplifier has on-board circuitry to protect them from shorts, temperature, overvoltage and undervoltage. An LED indicator is included on all four models to let you know when one of these conditions exists.



Infinity is one of the best selling car audio brands in the world. This is not a coincidence given the arduous testing and quality control. We take our craft seriously and want every consumer to have a world-class experience that lasts and lasts.

Input Sensitivity

An input level control adjusts input sensitivity. When low level inputs are used, this control can adjust the input between 200mVrms and 5.0Vrms. When high level inputs are used, the control adjusts the input between 0.5Vrms and 15Vrms. This allows Primus amps to be connected to virtually any factory system or serve as the foundation for a trophy-winning aftermarket competition system.


Switchable bass EQ

This provides an available bass boost at 45Hz of 6dB or 12dB, serving as a great tool to optimize subwoofer and loudspeaker performance based on location and enclosure type.


Cool industrial design

Black with grooved center panel, polished badge, black painted end panels and bottom.


Crossover mode switch*

LPF crossover controls are switchable between 0dB to 12dB at 45Hz giving user ability to adjust the sound to the environment and/or application.


Crossover control gives user additional fine-tuning

Adjusts the crossover turnover frequency between 32Hz and 320Hz. (One knob for each stereo pair.) 



  • Operating voltage 9 – 16V
  • RMS Power Rating
  • 4 ohms 90W
  • 2 ohms 110W
  • RMS bridged power @ 4 ohms - 220W
  • Total peak power 880W
  • Frequency response - 
  • THD + N at rated power
  • (20Hz – 20kHz)<1%
  • Line-in signal-to-noise ratio (reference to 1 watt)>75dB
  • Maximum high input signal level 12V
  • High input maximum sensitivity 0.5V
  • Maximum line input signal level 5V
  • Line input maximum sensitivity 0.2V
  • Quiescent current draw<1.5A
  • Fuse size 2 x 20A



  • 1 x Car Amplifier
  • Manual
  • Fitting as per Manufacturer


Hi there, you can choose delivery or self-pick up at our store in Ara Damansara. Contact +6019-269 6609 to pick up or more professional car audio advice!

Free Shipping within West Malaysia. We will bubble wrap to protect your goods before shipping.

We will ship out the product within the same working day. If fall on the weekends, we will ship out on Monday.

Need Professional Car Audio Advice? (FREE)

+6019-269 6609

Call or Whatsapp us for professional car audio advice, we don't bite :D

If you want to listen to the live demo of this product, kindly contact us.

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