Infinity Kappa Four 4-Channel Class D Amplifier

Model: KAPPAFOURAM UPC: 050667373146 Item: 176300

Product Information

Engineered For The Ultimate Sound Experience

Kappa full-range, multi-channel amplifiers deliver the efficiency and power you expect from Class D amplifiers – and the performance you expect from Infinity. The comprehensive all-new E.A.R.L terminal enables easy installation and optimized performance. The industrial design not only provides an elegant look but also enhances power dissipation to ensure long-term reliability. Kappa amplifiers give you the power to shape your car audio experience in new ways.


  • Class D Design
  • Low Distortion
  • Full On-Board Protection
  • Proprietary High-Conductivity Terminals
  • Compact footprint
  • Sleek design
  • Full-Range Line Outputs

Class D Design

Every Kappa amplifier, including the full-range models, features a high-efficiency Class D topology. This technology allows Infinity to engineer amplifiers that are more compact, generate less heat, and draw less current from the vehicle’s electrical system.

Low Distortion

Infinity’s Kappa amplifiers have been engineered to deliver the lowest distortion possible, enhancing the audio experience regardless of output level.

Full On-Board Protection

Infinity Kappa amplifiers have onboard circuitry to protect from shorts, temperature, overvoltage, and under-voltage. An LED indicator is included on all five models to let the user know when one of these conditions exists.

Proprietary High-Conductivity Terminals

All Infinity Kappa amplifiers equipped with newly introduced E.A.R.L terminal for better grounding.

Compact footprint

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

Sleek design

Sometimes, an amp can be as stylish as it is powerful. With an anodized aluminum and screwdriver access concealed by a magnetically attached panel, Infinity Kappa amplifiers have a clean, streamlined industrial design.

Full-Range Line Outputs

The full-range Kappa amplifiers include full-range line outputs. This allows the audio signal to be routed to additional amplifiers or self-powered subwoofer solutions, increasing your system configuration options.



  • Operating voltage: 9-16 volts
  • RMS power @ 4 ohms: 100W x 4
  • RMS power @ 2 ohms: 120W x 4
  • RMS bridged power @ 4 ohms: 240W x 2
  • Total peak power: 1500W
  • Frequency response: 15Hz – 35kHz@-3dB
  • Crossover filter LPF/HPF 32Hz – 320Hz Variable 12dB/Oct
  • THD + N at rated power: ≤0.1%
  • High input maximum signal level: 20V
  • High input maximum sensitivity: 2V
  • Line input maximum signal level: 2V
  • Line input maximum sensitivity: 0.2V
  • Line-in signal-to-noise ratio (reference to 1 watt): ≥80dB
  • Quiescent current draw: ≤1.6A
  • Fuse size: 2 x 30A
  • Dimensions (H x W x D): 6.9" x 1.6" x 10.2"
  • Weight: 5.66 lb

What's in the Box

What's in the Box

  • 1x Amplifier
  • 4x Differential Speaker-Level Adapter
  • 2x Spare Fuses
  • 4x Philip Screws
  • 1x E.A.R.L Terminal
  • 3x Self-Tapping Screws
  • 1x Owner’s Manual


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