Helix Mini MK2 (DSP – Series)

HELIX DSP MINI MK2 – The Ultimate Compact High-Resolution Digital Signal Processor

Next-Generation Miniature DSP for Unmatched Sound Precision

The HELIX DSP MINI MK2 represents the evolution of compact digital signal processing, offering advanced features and exceptional sound quality in a space-saving design. Powered by a cutting-edge 64-bit audio DSP and Burr-Brown A/D and D/A converters, this high-performance signal processor supports a 96 kHz sampling rate and a high-resolution audio bandwidth exceeding 40 kHz, ensuring crystal-clear audio like never before.

Delivering improved technical specifications including a higher output voltage of 6V, an enhanced signal-to-noise ratio, and lower Total Harmonic Distortion (THD), the MINI MK2 sets a new benchmark in compact DSP performance. Built on the robust ACO (Advanced CoProcessor) platform, it enables ultra-fast processing, seamless control, and access to proprietary sound enhancements such as Augmented Bass Processing and RealCenter, along with a channel-separated Input EQ and Input Signal Analyzer (ISA).

Compact Design, Seamless Integration, and Total Control

Designed with modern vehicle installations in mind, the HELIX DSP MINI MK2 fits easily into tight spaces without compromising durability. The Smart Control Port (SCP) ensures a secure, multifunctional connection with a snap-in design, providing power to connected accessories and preventing plug or cable damage—making compact system setups simpler than ever.

Feature-Rich Despite the Miniature Size

Despite its compact form, the HELIX DSP MINI MK2 doesn’t compromise on functionality. It includes:

• Smart high-level input with third-gen ADEP.3 (Advanced Diagnostics Error Protection)
• Auto remote turn-on
• Optical digital input (SPDIF)
• HEC slot for optional upgrades like Bluetooth® HD or High-Res Audio via USB
• Flexible signal routing with separate matrices for Line, SPDIF, and AUX/HEC
• Ground lift switch to eliminate ground loops
• DSP PC-Tool V4 software for intuitive configuration
• 10 memory slots for storing multiple sound setups

Key Features at a Glance

• 64-bit fixed-point audio DSP with 1.2 billion MAC/s
• High-resolution audio up to >40 kHz
• BurrBrown converters for top-tier A/D and D/A performance
• ACO 32-bit CoProcessor for ultra-fast operations and feature expansion
• Input EQ and ISA for precise input signal tuning
• Advanced DSP sound effects:
• Augmented Bass Processing
• StageXpander
• RealCenter
• ClarityXpander
• Power Save Mode to reduce amp power draw when idle
• Automatic digital input detection via Optical Input
• Start-stop capability – stable performance even when battery voltage dips to 6V
• Ultra-compact footprint ideal for space-limited installations

Special Technologies Explained

96 kHz Sampling Rate

With double the standard sampling rate, the DSP MINI MK2 enables extended audio bandwidth beyond 40 kHz. This ensures lifelike sound reproduction and allows room for more advanced audio features without performance compromise.

ACO – Advanced CoProcessor Technology

The integrated 32-bit ACO CoProcessor handles control and communication tasks at blazing speed. It enables smooth setup switching, firmware updates, and compatibility with factory diagnostic systems thanks to a native bootloader and enhanced memory capacity with 10 sound setup slots.

Smart High-Level Input with ADEP.3

Modern OEM radios often feature speaker diagnostics that can trigger errors when third-party processors are connected. The ADEP.3 circuit prevents these issues, offering full compatibility with factory systems without compromising volume performance.

Start-Stop Support

The built-in switched power supply maintains stable internal voltage, even during engine cranks, ensuring uninterrupted performance.

Power Save Mode

Designed to reduce energy consumption, this feature turns off connected amplifiers after 60 seconds of signal inactivity, reactivating them immediately when music resumes. Fully adjustable via the DSP PC-Tool V4 software.

Automatic Input Detection

Switch seamlessly between analog and digital sources with signal-based input detection—or manually toggle inputs with an optional remote control.

Exclusive DSP Sound Enhancements

RealCenter

This unique algorithm creates a dynamic center image by extracting and adjusting shared information between left and right channels. The result? A perfectly balanced, immersive soundstage for both the driver and passenger—unlike conventional center summing methods.

Augmented Bass Processing

Combines Dynamic Bass Enhancement and SubXpander for explosive yet controlled low-end performance. It adapts subsonic filters dynamically, producing deeper, fuller bass without risking subwoofer overload—even at high volumes.

StageXpander

Enhance your stereo field significantly with this feature, which expands front-stage imaging while preserving the clarity and localization of instruments and vocals. Adjustable in four levels for personalized listening.

ClarityXpander

Add brilliance and depth to your high frequencies with this treble enhancer. Available in three levels and separately adjustable for front and center channels, it’s ideal for systems where original tweeters lack clarity—without causing listener fatigue.