RZ4-1200D | 1200W Class D 4 Channel Amplifier

Power Acoustik RZ4‑1200D Razor Series – 4-Channel Compact Class D Amplifier, Built for Tight Spaces and Clean Sound

The Power Acoustik RZ4‑1200D delivers full-range signal performance in a footprint designed to fit tight installs without compromising output. As part of the Razor Series, this Class D 4-channel amplifier offers high-efficiency power delivery and intelligent signal sensing—making it an ideal solution for modern factory integrations and stealth builds.

Compact Chassis. Full-System Coverage.

Rated at 1200 watts peak and 600 watts total RMS, the RZ4‑1200D supports a range of system layouts:

• 100W x 4 @ 4Ω – for full-range speakers
• 150W x 4 @ 2Ω – for component systems or higher-load applications
• 300W x 2 bridged @ 4Ω – for small subwoofers or midbass drivers

Whether you're wiring door speakers or building a compact 4-way system, this amp brings the muscle with minimal draw and heat.

Built to Connect with Simplicity

Designed for seamless integration, the RZ4‑1200D features high-level speaker inputs with signal-sensing auto turn-on, eliminating the need for a separate remote wire when connected to OEM head units. Low-level RCA inputs (0.25V–6V) support clean signal paths from aftermarket sources.

Switchable crossover modes allow you to tailor your output with fixed high-pass/low-pass filters at 80Hz, while short-circuit, thermal, and overload protection circuits maintain system reliability under stress.

Technical Overview:

• 4-channel Class D full-range amplifier
• 1200W max / 600W RMS
• 100W x 4 @ 4Ω, 150W x 4 @ 2Ω, 300W x 2 @ 4Ω bridged
• MOSFET power supply, SMT circuit board
• Signal-sensing auto turn-on via high-level input
• Low-level RCA input (0.25–6V)
• Fixed 80Hz crossover filters
• Compact dimensions: 9″ x 4.75″ x 1.625″
• Single 30A fuse
• 8-gauge power input, 12-gauge speaker terminals

Best Use Cases:

• Compact sedans, trucks, motorcycles, or side-by-sides where space is limited
• Factory radio integration without splicing for remote turn-on
• 4-channel stereo systems or 2-channel bridged midbass/sub setups

If you’re building a tight-space install and want reliable, efficient output from a name that delivers on spec, the RZ4‑1200D is the tool for the job.