5-channel car amplifier — 75 watts RMS x 4 at 4 ohms + 350 watts RMS x 1 at 2 ohms
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Product Description


This handsome little black box delivers big power for your whole system and fits almost anywhere in your car. Infinity's Kappa Five 5-channel amplifier can supply four separate speakers with 75 watts RMS each, plus a subwoofer with 350 watts RMS — good news for everyone who likes their music loud. You could also use this amp to power a pair of high-performance speakers with 200 watts RMS each, and a subwoofer with 350 watts RMS.



The Infinity Kappa Five uses set screw terminals for the +12V power, ground, remote turn-on, and speaker outputs. The terminals are located under a magnetic cover, which can easily be pried off to access the screw heads. The screws can be tightened/loosened with a Phillips-head screwdriver (not provided).


The +12V Power and Ground terminals will accept up to 4-gauge wire. It is recommended that you use a minimum of 4 AWG power wire to the battery, with an in-line 100A fuse installed no more than 18" from the battery terminal. A 4 AWG ground wire (minimum) is also recommended, and attached to a metal area close to the amplifier.

E.A.R.L. Terminal

An Electrical Anti-Rotational Locking (E.A.R.L.) terminal is provided for the ground wire. The terminal is designed for 4-gauge wire and requires a large crimping tool to secure. Three screws are included to attach the terminal to your vehicle's metal chassis.

Remote Turn-On

The Remote screw terminal will accept up to 8 AWG wire. Typically, an 18 AWG turn-on lead is included in an amplifier wiring kit.

Power/Ground Adapter

If you wish to use power and ground wire larger than 4 AWG, you can use the included plug-in adapter. The adapter has posts that insert into the +12V, REM, and GND terminals and offers 1/0 AWG power and ground terminals. An 18 AWG screw terminal for the remote turn-on wire is also provided.

Speaker Outputs

The amp features set screw terminals for connecting four speakers and one subwoofer. The amplifier's minimum speaker impedance is 2 ohms.

Line-Level Inputs

The amplifier is equipped with three pair of RCA inputs for connecting stereo RCA patch cables from the head unit to the amp.

Speaker-Level Input

The amp includes six speaker-level adapters (bare wire-to-RCA) for connecting the amp to a factory radio or aftermarket head unit. You should insert the speaker wires from the head unit into the adapters and plug the adapters into amp's RCA inputs.

Remote Level Control

An RJ-25 modular "phone" jack is provided for connecting the Remote Level Control cable.

What’s in the box

  • 1x 5-Channel amplifier
  • 6x 30A ATO fuses (3 installed)
  • 6x Bare wire-to-RCA adapters
  • 1x EARL ground terminal (for 1/0-gauge wire)
  • 3x Flat-head screws (Length 1/2")
  • 1x Heat shrink tube (Length 1-3/16")
  • 4x Mounting screws (Length 2-3/16")
  • 1x 1/0-gauge power/ground wire adapter
  • 1x Remote bass controller
  • 1x 16.5' Remote cable (RJ25 plugs on both ends)
  • 1x Owner’s Manual

Technical Specifications

Additional Information

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Technical Specifications

General Specifications

Amplifier Class
Low-Pass Crossover Frequency
32-320 Hz
Low-Pass Slope (dB/octave)
12 dB/octave
High-Pass Crossover Frequency
32-320 Hz
High-Pass Slope (dB/octave)
12 dB/octave
Fuse Rating
Speaker Level Inputs
Preamp Outputs


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