Kicker 49WXA1000.4 Warhorse 4-Channel Amplifier | 250W RMS x 4

The Kicker Warhorse WXA1000.4 is a powerhouse engineered for elite competitors and serious audiophiles. Built to deliver brutal output and bulletproof reliability, this 4-channel full-range amplifier produces 250 watts RMS x 4 at 4 ohms and 450 watts RMS x 4 at 2 ohms, with the option to bridge for a staggering 900 watts x 2. Designed from the ground up by Kicker’s in-house R&D team, the Warhorse is built for extreme performance — both in the lanes and on the road.

The Warhorse amplifier line was built after years of field testing in SPL and sound-quality competitions. Every design element — from PCB layout to cooling management — was refined for uncompromising durability and precision.

Key Highlights:

• Full-Range 4-Channel Powerhouse – 250W x 4 @ 4Ω / 450W x 4 @ 2Ω / 900W x 2 bridged @ 4Ω

• Competition-Ready Build – Built to withstand extreme heat, current draw, and long play cycles

• Fully Start/Stop Compliant – Operates reliably down to 6.5V

• Quad Micro-Controlled Cooling Fans – Maintains optimal temperature under heavy load

• Variable Electronic HP/LP/BP Filters – Customizable crossovers for precision sound control

• Daisy-Chain Power Linking – Allows remote power chaining across multiple Warhorse amps

• Tiffany-Style RCA Connections – Ensures secure, noise-free signal transmission

• Diagnostic Magnetic Mount Tool Included – Monitor voltage and amp protection in real time

• FIT+™ Differential Inputs – Compatible with factory and aftermarket head units

• 1/0 AWG Power & Ground Terminals and 8 AWG Speaker Outputs for maximum current delivery

• Engineered In-House by Kicker R&D – Every component tested to extreme conditions

• Model: WXA1000.4

• RMS Power Output (@14.4V, <1% THD+N): 250W x 4 @ 4Ω / 450W x 4 @ 2Ω / 900W x 2 bridged

• Dynamic Power (Watts, @14.4V, <10% THD+N): 2000W

• Frequency Response: 10Hz – 20kHz

• Signal-to-Noise Ratio (A-weighted, re: rated power): >90dB

• Signal-to-Noise Ratio (ref: 1W): >70dB

• Input Sensitivity: Low Level 125mV–5V / High Level 1V–40V

• Dimensions (H x W x L): 2-9/16" x 9-1/8" x 15-3/8" (6.5 x 23.2 x 39.1 cm)

• Warranty: 2 Years (Authorized Kicker Dealer)

Each Warhorse amplifier is built to exceed the most demanding competition standards. From the custom rail structure to noise rejection circuitry, every detail has been refined for ultra-low THD, precise frequency control, and maximum efficiency.

• Full Range Capability: Designed for mids, highs, or full-range door setups

• Noise-Free Performance: Advanced circuit shielding for interference-free operation

• Thermal Protection: Intelligent cooling maintains consistent output during extended use

• Built to Last: Every unit undergoes vibration, heat, and full-load stress testing before leaving Kicker’s lab

For those chasing trophies, clarity, and uncompromising sound dominance — the Warhorse series sets a new standard for professional-grade amplifiers. With competition-tested design, cutting-edge power management, and genuine Kicker reliability, the WXA1000.4 is the ultimate weapon for any serious build.

• Authorized Kicker Warhorse Dealer – Full manufacturer warranty and guaranteed authenticity

• Fast & Free Shipping via USPS, UPS, or FedEx

• Ships within 1 Business Day from our North Carolina warehouse

• Trusted 12-Volt and Competition Audio Experts Since 1979