HiFonics PLUTO IV

The HiFonics PLUTO IV is an exceptionally compact 4-channel digital amplifier that delivers impressive power and high-quality sound despite its small size. Modern Class D technology enables high efficiency of up to 90% and ensures efficient amplification with minimal heat generation.

Thanks to its space-saving design, the PLUTO IV is ideal for vehicles with limited installation space. With an RMS power output of up to 4 x 95 watts at 2 ohms or 2 x 190 watts in bridge mode at 4 ohms, the amplifier provides ample power reserves for demanding speaker systems.

For integration into modern vehicles, the PLUTO IV features high-level inputs with integrated EPS® (Error Protection System). This system supports connection to factory-installed car stereos with diagnostic functions. The automatic power-on function also allows operation without a separate remote signal when a suitable high-level control signal is present.

Individually adjustable high-pass and low-pass filters for the front and rear channels, as well as a switchable bass boost, allow for flexible adaptation to different speaker configurations. A 2CH/4CH input selector switch and RCA inputs and outputs via a cable harness expand the connection options.

The amplifier also impresses visually with a high-quality brushed aluminum heat sink, milled model names, and a recessed diamond-cut logo.

Technical Specifications

General Characteristics

• Manufacturer: HiFonics

• Model: PLUTO IV

• Amplifier Type: 4-Channel Micro Amplifier

• Amplifier Technology: Digital Class D

• Number of channels: 4

• Efficiency: up to 90% (manufacturer's specification for the PLUTO series)

• Operating voltage: 12 V vehicle electrical system

• Start-stop capability: 7 V and above

• Speaker impedance: 2–8 ohms in stereo mode
  
  

RMS Output Power at 14.4 V

• 4 ohms: 4 x 50 watts RMS

• 2 ohms: 4 x 95 watts RMS

• 4 ohms bridged: 2 x 190 watts RMS
  
  

Audio Characteristics

• Frequency response (-3 dB): 9–44,000 Hz

• Signal-to-noise ratio: 105 dB

• Damping factor: greater than 100

• Total Harmonic Distortion (THD at 1 W RMS): less than 0.005%

• Input sensitivity: 0.15–6 V
  
  

Front Crossover (Channels 1/2)

• Operating Modes: HPF / FULL / LPF

• High-pass filter (HPF): 40–250 Hz

• Low-pass filter (LPF): 40–250 Hz

• Bass Boost: 0 / +6 / +12 dB
  
  

Rear Crossover (Channels 3/4)

• Operating Modes: HPF / FULL / LPF

• High-pass filter (HPF): 40–250 Hz

• Low-pass filter (LPF): 40–250 Hz

• Bass Boost: 0 / +6 / +12 dB
  
  

Connections and Features

• Low-level RCA inputs via a cable harness

• Low-level RCA outputs via a cable harness

• High-level inputs with EPS® (Error Protection System)

• Automatic Power-On Function (Auto Turn-On)

• Input selector switch for 2-channel or 4-channel operation

• Clipping LED for clipping indication

• Bridgeable Channel Operation

• Integrated fuse: 1 x 30 A
  
  

Dimensions

• Width: 115 mm

• Height: 35 mm

• Housing length: 140 mm

• Total length, including connectors: 166 mm

What's Included

• 1 HiFonics PLUTO IV 4-Channel Digital Amplifier

• 1 x User Manual