DS18 ZR1600.4D ZR Class D 4-Channel Stereo Full Range Car Audio Amplifier 4 x 400 @4 Ohms Watts RMS

The DS18 ZR1600.4D is a high-performance 4-channel Class D car audio amplifier engineered for full-range stereo applications. Delivering robust power output across multiple load configurations, it offers 4 × 400 W RMS at 4 Ω, 4 × 680 W RMS at 2 Ω, and up to 2 × 1200 W RMS bridged at 4 Ω, making it ideal for powering multi-speaker setups or bi-amp systems in street builds and competition builds alike. With full-range selectable crossovers and protective circuitry, the ZR1600.4D suits serious installers and enthusiasts seeking efficient, punchy performance without excessive heat or bulk. 

KEY BENEFITS

• Digital Class D topology provides high efficiency and power delivery with reduced thermal load
• 4 × 400 W RMS @ 4 Ω supports driving full-range speakers with clean output
• 4 × 680 W RMS @ 2 Ω increases headroom for power-hungry component systems
• 2 × 1200 W RMS bridged @ 4 Ω delivers substantial power for front/rear or sub configurations
• Selectable full/low-pass/high-pass filters allow precise frequency tailoring for system integration
• Frequency response spanning 20 Hz–20 kHz ensures full audible range fidelity for music and voice content
• Robust protection suite includes thermal, overload, and clipping indicators for safe long-term use
• 0 GA power/ground terminals support secure heavy-gauge wiring for stable current delivery
• 90 dB signal-to-noise ratio yields low background noise for clearer dynamics
• 280 A fuse rating enables high current capacity in demanding installations 

TECHNICAL SPECIFICATIONS

• Weight: 6.18 lb
• Dimensions: 12.83″ L × 7.24″ W × 2.00″ H
• Power Handling: 4 × 400 W RMS @ 4 Ω / 4 × 680 W RMS @ 2 Ω / 2 × 1200 W RMS Bridge @ 4 Ω
• Impedance: 2 Ω Stereo / 4 Ω Bridge
• Frequency Response: 20 Hz–20 kHz
• Sensitivity (Low-Level Input Range): 0.2–6 V
• Signal-to-Noise Ratio: >90 dB
• Total Harmonic Distortion: 1%
• Efficiency @ 4 Ω: 82%
• Damping Factor: 160
• Selectable Crossover: Full / Low-Pass / High-Pass (40 Hz–4 kHz range)
• Fuse Size: 280 A
• Power/Ground Terminal: 0 GA
• LED Indicators: Clipping, Protect, Power 

INSTALLATION & COMPATIBILITY

The ZR1600.4D installs in typical trunk or under-seat amplifier locations using surface mount hardware and requires adequate ventilation due to its Class D design. It performs best when paired with an aftermarket head unit or signal processor that can utilize its selectable crossovers, and it benefits from a matched amplifier power supply capable of delivering current consistently (recommend 0 GA wiring and a high-output alternator in vehicles with demanding systems). This amplifier suits a wide range of builds from custom street cars to off-road rigs, accommodating four-speaker setups or bridged pairs feeding midbass or component sets with ample headroom. 

FAQS

• What types of products are in the DS18 ZR1600.4D collection?
  The ZR1600.4D category includes 4-channel amplifiers designed to power full-range systems with strong, clean output. Users can compare models built for different power levels and efficiency, ideal for upgrading factory systems or building aftermarket setups.
• How does a 4-channel amp in this category differ from other amps?
  A 4-channel amp like the ZR1600.4D lets you power front and rear speakers from a single unit, delivering balanced sound and better control. Compared to monos or 2-channel amps, these units offer broader use in multi-speaker systems.
• What should I consider when choosing a ZR1600.4D amplifier?
  Look at RMS per channel, total output, cooling design, and size. Browsing the category helps you match the amp’s power with your speakers’ ratings and your vehicle’s electrical capacity for sustained performance.
• Are DS18 ZR1600.4D amps good for high-volume listening?
  Yes — many models in this collection are built to handle louder daily driving and performance builds. Explore the range to find units with headroom and control tailored to your sound system goals.