Axxera AX490D

4-channel car amplifier — 97 watts RMS x 4

Item #: 070AX490D

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Mini brute

Axxera's Mini Series car amplifiers pack a lot of sound into a small space. Their AX490D 4-channel amplifier drives each of your front and rear speakers with 97 watts RMS of smile-inducing power, or it'll drive two subwoofers with 275 watts each in two-channel mode. It packs all that Class D power into a package that's only 1-5/8" high and 4-3/4" wide, allowing it to fit under most car seats or just about any tight spot in your vehicle.

Dialing in

The high- and low-pass crossovers allow you to tailor the AX490D's output to your speakers' response. Its variable bass boost lets you add some thump when it's needed. You'll enjoy the additional control and flexibility, and you'll appreciate the price as well.

Product Highlights:

  • 4-channel car amplifier
  • 97 watts RMS x 4 at 4 ohms (132 watts RMS x 4 at 2 ohms)
  • 275 watts RMS x 2 bridged at 4 ohms (4-ohm stable bridged)
  • peak power: 600 watts
  • Class D amp technology
  • full MOSFET DC-DC PWM power supply
  • variable high- and low-pass crossovers (35-350 Hz, 12dB/octave)
  • frequency response: 10-35,000 Hz
  • preamp and speaker-level inputs
  • fuse rating: 40A x 1
  • 8-gauge power and ground leads recommended — wiring and hardware not included with amplifier
  • dimensions: 11-1/16"W x 1-3/4"H x 4-15/16"D
  • warranty: 1 year
  • Our 60-day money-back guarantee

My system has plenty of power. Who needs an amp?

You might think you don't need an amp because you have a 400-watt system in your car, or because your new stereo puts out 50 watts a channel. But those are peak wattage ratings, which may boil down to 15 or 20 watts per channel, using the more realistic RMS rating. An amp sends your speakers the power they need to deliver your music with clarity and impact, whether you're using factory speakers or high-performance components. And low-frequency reproduction requires lots of power, so an amp is an absolute must if you're adding a sub to your system.

Hands-on research

What's in the box?

Download owner's manual

  • 4-Channel Class D amplifier
  • One 40-amp ATO fuse (installed)
  • Two 8" Speaker-level input harnesses
  • Four 5/8" Self-tapping screws
  • Owner's manual

Product Research

Features
Controls
Connections

Features

Channel Configuration: The Axxera AX490D is a 4-channel amp; essentially two full range 2-channel amps built into one chassis. Both sections are bridgeable, so the it can be configured as a 4-channel, 3-channel, or 2-channel amplifier.

  • Power Output:
    • 4Ω: 97 watts RMS x 4-channels
    • 2Ω: 132 watts RMS x 4-channels
    • Bridged: 275 watts RMS x 2-channels into 4Ω

Signal Inputs: In addition to the two pair of RCA inputs, two speaker level input harnesses are included to plug into the two high level input ports on the amp.

Auto Turn-on: When using a speaker level input, the amp will turn on automatically when it senses the input signal.

Controls

Level Control (Gain): The input levels are independently adjustable for the front and rear channels. The input range is 0.25 Volts to 6.0 Volts.

Crossover: The amp also has independent crossover controls for the front and rear channels. The crossover slopes are 12 dB/octave:

  • Crossover Mode: three position switch; choose flat (full range, crossover is bypassed), high pass, or low pass
  • Frequency: set the crossover point when in high pass or low pass mode; rotary dial; 35-350 Hz

Connections

Power Input: Two set-screw terminals are provided for connecting the power and ground cables. The terminals accept up to 8-gauge wire. The set screws are tightened/loosened with a Phillips head screw driver (not included).

Speaker Outputs: The four pair of speaker output set-screw terminals will accept up to 8-gauge wire. The set screws are tightened/loosened with a Phillips head screw driver (not included).

Line Input: There are two pair of RCA input jacks.

Speaker Level Input: The amplifier has two high level input jacks, for use with the included speaker level harnesses.

Remote Turn-on: The remote turn-on terminal is a set-screw that will accept up to 8-gauge wire. There is also a remote out terminal, useful for turning on another amplifier. The set screws are tightened/loosened with a Phillips head screw driver (not included).

Fuse: The amp has one 40-amp ATO fuse.

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team — they open the box, verify contents, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

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