Helix DSP Pro MK3 (DSP – Series)

HELIX DSP PRO MK3

The HELIX DSP PRO MK3 is the ultimate sound processor for audiophiles and system integrators, delivering exceptional audio performance and flexible integration. With double the processing power of its predecessor, advanced tuning software, and Audiotec Fischer’s proprietary DSP features, this processor sets a new benchmark in car audio signal processing.

Technology & Architecture

Twin DSP Power – Dual 64-Bit DSPs

Equipped with two Analog Devices 64-bit DSP chips, the DSP PRO MK3 boasts a massive 2.4 billion MAC operations per second. Combined with a 96 kHz sampling rate and AKM Velvet Sound A/D and D/A converters, it enables ultra-high-resolution audio playback with a bandwidth exceeding 40 kHz.

ACO Platform – 32-Bit CoProcessor

The ACO (Advanced CoProcessor) handles all control tasks with extreme speed and offers advanced DSP functionalities, such as:

• ISA (Input Signal Analyzer)
• Channel-separated Input EQ
• RealCenter & Augmented Bass Processing
• Proprietary TuneEQ for auto EQ calibration
• Native firmware updates for future compatibility

Sound Optimization Tools

TuneEQ – Automated Frequency Response Correction

Automatically adjusts the output EQ using a single channel or channel-pair measurement. This intelligent algorithm calibrates the frequency response to your desired reference curve, optimizing sound with minimal effort.

RealCenter

Creates a dynamically controlled, true center image by analyzing the stereo content. Unlike standard summing techniques, it avoids audio overlap and distortion, ensuring a wide and stable soundstage for both driver and passenger.

Augmented Bass Processing

Combines:

• Dynamic Bass Enhancement – Deep, powerful bass with adaptive subsonic filtering
• SubXpander – Adds harmonics to enrich low-end textures between 50–100 Hz

VCP (Virtual Channel Processing)

Enables intuitive configuration of complex systems by decoupling input, processing, and output stages.

Connectivity & Inputs

• 8 x High-Level Inputs (up to 32V) with 3-stage sensitivity control
• 8 x RCA Inputs (up to 4V)
• 1 x Optical SPDIF (96 kHz)
• 1 x Coaxial SPDIF (192 kHz)
• 1 x HEC Slot – Add modules like Bluetooth® HD audio or USB Hi-Res streaming
• 10 x RCA Outputs (up to 8V)

Also includes:

• Smart Control Port (SCP) – Future-proof accessory integration
• Ground Lift Switch – Prevents ground loop noise

Software & Configuration

DSP PC-Tool V5

Industry-leading configuration software with:

• Precise parametric EQs, crossovers, time alignment (up to 20 ms)
• Freely assignable signal routing for RCA, SPDIF, and HEC inputs
• Reverse delay for accurate phase summation of inputs
• Easy setup, storage and recall (up to 10 sound presets)
• Optional remote control compatibility

Integration & System Reliability

Smart ADEP.3 High-Level Input Circuit

Bypasses factory diagnostics (error messages, disabled faders) while protecting OE speaker outputs, even at high volume.

Start-Stop Ready

Stable operation even with vehicle voltage drops to 6V during engine start.

Power Save Mode

Shuts down amplifiers after 60 seconds of audio inactivity. Reactivates instantly upon signal detection. Time can be customized or disabled in the software.

Auto Digital Signal Detection

Automatically switches between analog and digital inputs when a signal is detected. Manual override available via software or optional remote.

Key Features Summary