Bold styling keeps up with performance

JVC's DRVN Series car amplifiers are all about power… with style. These amps feature aggressive looks, strong value, and plenty of power packed into a compact, low-profile housing. The KS-AX3201D subwoofer amp, for example, can power a sub with up to 400 watts RMS, from a chassis that's roughly 8" by 7" — that'll fit in a lot of places in your vehicle.

Versatile features

The KS-AX3201D comes with the controls you need to get the bass sounding right in your vehicle. A low-pass filter with a sharp 18 dB per octave slope allows you to get. your sub meshed perfectly with the rest of your speaker system. You can use the variable bass boost to add up to 18 dB of punch at 45 Hz, while a fixed subsonic filter eliminates super-low bass so your amp and sub play more efficiently. And speaker-level inputs allow you to hook this amp to almost any car stereo, even a factory system.

Product Highlights:

  • mono subwoofer amplifier
  • 250 watts RMS x 1 at 4 ohms (400 watts RMS x 1 at 2 ohms)
  • CEA-2006 compliant
  • variable low-pass filter (50-200 Hz, 18 dB/octave)
  • variable bass boost (0-18 dB at 45 Hz)
  • Class D amp technology
  • frequency response: 20-200 Hz
  • MOSFET power supply and output stage
  • preamp and speaker-level inputs
  • fuse rating: 40A x 1
  • 8-gauge power and ground leads recommended — wiring and hardware not included with amplifier
  • 9-1/4"W x 2-1/4"H x 7-3/8"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.

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Hands-on research

What's in the box?

Download owner's manual

  • Mono subwoofer amplifier
  • 40 amp ATO fuse (installed)
  • 8.5" Speaker level input harness
  • Four 3/4" Self-tapping screws
  • Instructions (English/ Russian/ German/ Italian/ French/ Spanish/ Dutch/ Swedish/ Greek)
  • Warranty information

Product Research


CEA-2006 Compliant: CEA-2006 is a system of testing and measurement methods for mobile audio amplifiers. This voluntary standard advocates a uniform method for measuring an amplifier's RMS power output and signal-to-noise ratio. The criteria for measuring power uses a DC input voltage of 14.4 volts and the RMS power output is measured with 1% or less Total Harmonic Distortion plus noise (THD+N) over a frequency range of 20 Hz to 20 kHz (for full range amplifiers). Signal-to-Noise ratio is measured in weighted absolute decibels (dBA) at a reference of 1 watt into 4Ω. CEA-2006 allows consumers to compare car amplifiers and receivers on an equal basis. Using CEA-2006 criteria, the JVC KS-AX3201D is rated as follows:

  • Power Output:
    • 4Ω: 250 watts x 1-channel
    • 2Ω: 400 watts x 1-channel
  • Signal to Noise Ratio: 60 dBA

Crossover: The low-pass crossover has an 18 dB/octave slope and the crossover point is continuously variable from 50 Hz to 200 Hz. The crossover cannot be bypassed (it's not a full range amp).

Power Connections: The power and ground terminals are nickel-plated screw terminals. They will accept spade connectors or ring terminals up to 0.5" wide. The remote turn-on terminal will accept a spade connector or ring terminal up to 0.35" wide.

Speaker Connections: The speaker output (one pair) is also nickel-plated screw terminals and will accept spade connectors or ring terminals up to 0.35" wide.

Speaker Level Input: A speaker level input harness is included, making it easier to add the amplifier to a factory radio or to a receiver with no preamp outputs.

Line Level Output: The amplifier has a pair of RCA line level outputs to feed another amplifier.

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 verify what’s in the box, 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.