Crunch CRE400.4DSP-ISO

The Crunch CRE400.4DSP-ISO combines a compact, analog 4-channel Class A/B amplifier with a powerful 6-channel Full HD audio DSP. This makes the DSP amplifier ideal for targeted sound optimization of existing car audio systems without the need to install a large power amplifier.

The four built-in amplifier channels deliver up to 4 x 50 watts RMS into 2 ohms and can, for example, directly drive front and rear speakers. At the same time, the built-in DSP provides a total of six processed RCA outputs. This makes it easy to expand the system with additional power amplifiers, for example, to drive an extra subwoofer.

At the heart of the signal processing is a 32-bit dual-core DSP operating at 122.88 MHz with a 48-kHz sampling rate. Extensive customization options—such as a 31-band parametric equalizer, freely configurable crossovers, time alignment, level adjustment, and phase reversal—allow for precise tuning of the audio system to the vehicle and listening position.

Configuration can be performed the traditional way using the DSP Master software for Windows or wirelessly via the DSP Master app for iOS and Android. The built-in Bluetooth module also enables wireless audio streaming and supports A2DP/aptX.

The ISO version comes with a 1-meter ISO Plug+Play connection cable, making it particularly easy to integrate with compatible car stereos. Vehicle-specific ISO.M adapters are also available for many vehicles.

Technical Specifications

• 4-Channel Analog Class A/B Amplifier

• Integrated 6-channel Full HD audio DSP

• Output power: 4 x 35 watts RMS at 4 ohms

• Output power: 4 x 50 watts RMS at 2 ohms

• Maximum output power: 400 watts

• DSP: Dual-Core Audio Signal Processor

• DSP resolution: 32 bits

• DSP clock frequency: 122.88 MHz

• Sampling rate: 48 kHz

• Frequency response: 10 – 21,000 Hz

• THD: 0.03%

• Crossover Networks: High-Pass, Low-Pass, and Band-Pass

• Crossover slope: 6–48 dB/octave

• Parametric 31-band equalizer per output channel

• Runtime correction integrated

• Phase setting: Normal / Inverted

• Adjustable channel and master levels

• Built-in input mixer

• Subwoofer Control via DSP

• Multiple DSP presets can be saved and recalled

• DSP Control via a Windows PC

• DSP Control via the DSP Master App for iOS and Android

• Bluetooth Audio Streaming via A2DP/aptX

• Automatic Power-On Function

• Remote-Out Function

• Dimensions: 97 x 47 x 208 mm
  
  

Inputs

• 4 high-level inputs via cable connectors

• 1 x stereo AUX input via RCA (L/R)

• 1 Bluetooth Stereo Audio Receiver

• 1 x USB Type B for connecting to a PC
  
  

Outputs

• 4 amplified speaker outputs via cable connectors

• 6 x DSP signal outputs via RCA

• RCA output voltage: 2 V RMS

• Remote-Out for turning on additional amplifiers
  
  

Package Contents / Connectivity

• Crunch CRE400.4DSP DSP Amplifier

• 1-meter ISO Plug+Play connection cable (when selecting the standard ISO option)

• Plug-and-Play Integration with Compatible Car Stereos

• Optionally expandable/selectable with vehicle-specific Crunch ISO.M adapter cables