HiFonics ZXR900/4

The HiFonics ZEUS ZXR900/4 combines powerful amplifier performance, modern Class D technology, and an exceptionally compact design. As part of the long-established ZEUS series, this 4-channel amplifier delivers high output power while maintaining efficient energy consumption.

Modern digital technology enables an efficiency of over 90% and ensures that, even under high power demands, comparatively little energy is converted into heat. High-quality, audiophile-tuned components and robust cast-aluminum side panels underscore the ZEUS series’ commitment to quality.

With up to 4 × 225 watts RMS at 2 ohms or 2 × 450 watts RMS in bridge mode at 4 ohms, the ZXR900/4 is suitable for both high-power speaker systems and combinations of front speakers and subwoofers.

Thanks to its built-in EPS® high-level inputs, the amplifier can also be integrated into modern vehicles equipped with factory-installed car stereos. The automatic power-on function supports both DC offset and signal detection. In addition, the amplifier is compatible with vehicles equipped with a start-stop system.

Extensive filtering options, a bandpass function, an adjustable bass boost, and the included wired bass level remote control allow for flexible adaptation to various car audio setups.

Technical Specifications

General Characteristics

• Manufacturer: HiFonics

• Series: ZEUS POWER ZXR

• Model: ZXR900/4

• Amplifier Type: 4-channel amplifier

• Amplifier Technology: Digital Class D

• Efficiency: Over 90% according to the manufacturer

• Operating voltage: 12 V vehicle electrical system

• Speaker impedance: 2–8 ohms

• Bridge mode: Possible, minimum 4 ohms

• Frequency response (−3 dB): 4–39,000 Hz

• Damping factor: Over 300

• Signal-to-noise ratio: 107 dB

• Total harmonic distortion at 1 W RMS: Less than 0.02%

• Input sensitivity: 0.2–5 V
  
  

RMS output power at 14.4 V

• 4 ohms: 4 × 135 watts RMS

• 2 ohms: 4 × 225 watts RMS

• 4 ohms bridged: 2 × 450 watts RMS
  
  

Crossover for Channels 1/2 (Front)

• Crossover modes: Full / HP / Dupe

• High-pass filter (HPF): 50–5,000 Hz

• Dupe function: Routes the signal from the rear channels to the front channels
  
  

Crossover for Channels 3/4 (Rear)

• Crossover modes: Full / HP / LP / BP

• High-pass filter (HPF): 10–500 Hz

• Low-pass filter (LPF): 50–5,000 Hz

• Bandpass function: Yes

• Bass Boost: 0–12 dB at 45 Hz
  
  

Connections and Features

• RCA inputs: Available

• RCA Outputs: Available

• Input selector switch: 2CH / 4CH

• High-level inputs: Available

• EPS® (Error Protection System): Yes

• Automatic power-on function: Yes

• Switch-on detection: DC offset or VOX signal detection

• Start-stop capability: Up to 8.5 V

• IFT (Interference Free Technology): EMC-certified technology for reducing electromagnetic interference

• Bass Level Remote Control: Wired

• Lighting: HiFonics logo panel with blue backlighting

• Housing: Compact design with cast aluminum side panels

• External protection: 1 × 80 A

• Dimensions (W × H × L): 150 × 50 × 262 mm
  
  

What's Included

• 1 × HiFonics ZEUS ZXR900/4 4-Channel Amplifier

• 1 × Wired Bass Level Remote Control

• 1 × User's Manual