HiFonics ZXS900/1

The HiFonics ZXS900/1 from the ZEUS STREET series combines powerful bass performance with modern Class D digital technology and an exceptionally compact design. With up to 900 watts RMS at 1 ohm, this mono amplifier delivers ample power for high-performance subwoofer systems and, thanks to its compact size, can be installed in a vehicle without taking up much space.

Advanced Class D technology enables high efficiency with comparatively low heat generation. The solid aluminum enclosure, featuring high-quality cast aluminum end caps, a milled model designation, and a recessed HiFonics logo, underscores the distinctive ZEUS design.

The ZXS900/1 also impresses with its wide range of features. Adjustable low-pass and subsonic filters, as well as an adjustable bass boost, allow for customization to match the connected subwoofer. The included bass level remote control lets you adjust the bass settings right from the driver’s seat.

For integration into modern vehicles, the amplifier features high-level inputs with EPS (Error Protection System), an automatic power-on function, and start-stop compatibility. HiFonics IFT (Interference Free Technology) reduces electromagnetic interference and ensures interference-free radio reception.

Technical Specifications

General Characteristics

• Model: HiFonics ZXS900/1

• Series: ZEUS STREET ZXS

• Amplifier Type: Digital Mono Amplifier

• Amplifier Class: Class D

• Number of channels: 1 channel

• Speaker impedance: 1–8 ohms

• Operating voltage: 12 V vehicle electrical system

• Frequency response (−3 dB): 6–1250 Hz

• Input sensitivity: 0.2–5 V

• Signal-to-noise ratio: 105 dB

• Damping factor: greater than 320 (according to the German user manual)

• Total Harmonic Distortion: less than 0.05% at 1 W RMS
  
  

RMS Output Power at 14.4 V

• 1 × 325 watts RMS at 4 ohms

• 1 × 600 watts RMS at 2 ohms

• 1 × 900 watts RMS at 1 ohm
  
  

Crossover Networks and Sound Settings

• Low-pass filter (LPF): 50–250 Hz, adjustable

• Subsonic filter: 10–30 Hz, adjustable

• Bass Boost: 0–18 dB, adjustable

• Bass boost frequency: 45 Hz

• External bass level remote control: Yes
  
  

Connections and Features

• RCA inputs: Yes, via a connection cable harness

• High-level inputs: Yes

• EPS (Error Protection System): Yes

• Automatic power-on function: Yes

• Activation via DC voltage detection or audio signal detection (VOX)

• Start-stop capability: Yes, up to 8.5 V according to the German manual

• IFT (Interference-Free Technology): Yes

• EMC-certified digital technology: Yes

• External protection: 1 × 100 A
  
  

Dimensions

• Width: 112 mm

• Height: 44 mm

• Length: 230 mm
  
  

Special Features

• Compact and powerful Class D mono amplifier

• Up to 900 watts RMS output power

• Stable operation at 1 ohm

• High efficiency thanks to modern digital technology

• High-quality aluminum housing in the ZEUS STREET design

• Adjustable low-pass and subsonic filters

• Adjustable bass boost up to +18 dB

• High-level inputs with EPS for modern factory-installed radios

• Automatic activation is possible without a separate remote signal

• Start-Stop compatible

• IFT Technology for Reducing Electromagnetic Interference

• Bass Level Remote Control for Convenient Adjustment
  
  

What's Included

• 1 × HiFonics ZXS900/1 mono amplifier

• 1 × Bass Level Remote Control

• 1 × Cinch input adapter / RCA cable harness

• 1 × High-Level Input Adapter / High-Level Wiring Harness with EPS

• 1 × User's Manual