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Compact black mono amplifier with wired remote control

KENWOOD

Kenwood X503-1 500W RMS Mono Car Amplifier with Wired Remote

SKU CH-DKPB-3Y9XB

Class D mono amplifier delivering 500W RMS at 2Ω and 300W at 4Ω with wired remote

  • Product typeAmplifier
  • Key featuresDelivers a maximum power output of 1000 W for strong, clear
  • Delivers up to 1000W peak power for strong, clear sound
  • Provides 500W RMS at 2 ohms for reliable performance
  • Compact design fits various installations with wired remote control
  • Variable low-pass filter and bass boost enable sound customisation
  • Infrasonic filter and signal-sensing turn-on protect speakers and simplify setup

Power for single-subwoofer systems

The Kenwood X503-1 is a Class D mono amplifier built to drive one subwoofer with 500W RMS at 2Ω or 300W RMS at 4Ω. Its compact 8-3/8" by 5-7/8" footprint fits tight vehicle spaces while the wired remote puts level control at the driver's fingertips.

Sustained output and thermal control

Class D efficiency keeps heat low during extended listening sessions so the amplifier maintains its rated RMS figures without thermal shutdown. The infrasonic filter removes sub-audible frequencies that waste power and stress the driver, while the variable low-pass filter and bass boost let you shape the response for sealed or ported enclosures.

Upgrading from multi-channel or lower-power units

Replacing a bridged two-channel amp or an entry-level mono block with this 500W RMS unit adds headroom and cleaner bass authority at high volume. Buyers who need to power multiple subwoofers or require higher impedance stability should look elsewhere, as this model is optimised for a single 2Ω or 4Ω load.

How it compares

Measured against everything we stock in Car Audio Amplifiers, at today’s prices. Recalculated every night.

Price $242.99
Typical for this category: the median of 158 items is $225.49.

Specifications

Product
Brand nameKenwood
Product typeAmplifier

Questions about this item

How much heat or power draw should I expect when the X503-1 runs all day at 500W RMS?

The Class D circuit design runs efficiently, so sustained 500W RMS at 2Ω produces far less heat than older amplifier types and draws proportionally less current from the vehicle electrical system.

What wiring and power components must I already have for the X503-1 to deliver its rated 500W RMS?

You need a 2Ω-capable subwoofer, adequately sized power and ground cables, a suitably rated fuse near the battery, and a solid chassis ground to support the 500W RMS output.

Will the X503-1 integrate with my factory head unit that only has speaker-level outputs?

Yes, the built-in speaker-level inputs and signal-sensing turn-on let you connect directly to factory speaker wires without a line-output converter or separate remote wire.

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