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Silver rectangular car amplifier with black end caps and knobs

KENWOOD

KENWOOD eXcelon X303-4 600W 4-Channel car amplifier

SKU CH-NFVX-VVXAR

Compact Class D four-channel amplifier delivering 600 W with adjustable filters, gain controls and built-in protection circuitry

  • 600 watts of dynamic sound in a compact design
  • Four channels drive multiple speakers or bridge for subwoofer use
  • Adjustable high-pass and low-pass filters plus gain control for precise tuning
  • Class D amplification runs cool during extended listening sessions
  • Thermal, overcurrent and short-circuit protection ensures safe, durable operation

Product Identity

The KENWOOD eXcelon X303-4 is a 600W Class D car amplifier built for drivers who want a compact, four-channel power upgrade. It suits systems needing flexible speaker or bridged subwoofer configurations. Buyers requiring more than four channels or higher total output should look elsewhere.

Capacity and Headroom

The amplifier delivers up to 600 watts of dynamic power across its four channels. It comfortably drives multiple speakers or bridged loads for subwoofer duty. Headroom runs out when the system demands exceed the rated output or when more than four independent channels are required.

Thermals, Noise and Power Draw

Class D efficiency keeps heat low during extended listening sessions, so the unit stays cool under pressure. Thermal, overcurrent and short-circuit protection circuits engage automatically to maintain safe operation. No figures for idle draw or fan noise are provided.

How it compares

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

Price $343.99
Pricier than about 67% of the 158 comparable items (median $225.49).

Specifications

No published specifications for this item yet.

Questions about this item

Will the X303-4's 600W output overdrive my existing factory speakers?

The 4-channel design lets you set gain and crossover points per channel so the amplifier only delivers clean power within each speaker's limits.

How can I verify the Class D amp is running correctly once installed?

With the engine running, check that the protection LED stays off and listen for clear, distortion-free output across all four channels at moderate volume.

Does the X303-4 package include speaker wire, RCA cables or a wiring kit?

The amplifier ships as a standalone unit; power wire, ground wire, RCA interconnects, speaker wire and a fuse holder must be purchased separately.

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