Helix C One (C – Series)

HELIX C ONE

The Sound Powerhouse – Extreme Output Meets Stunning Fidelity

The HELIX C ONE is a high-end, 1-channel Class AB amplifier engineered to drive the most demanding subwoofers and mid-woofers with relentless power and audiophile precision. Equipped with a total of 32 hand-selected MOSFET transistors and ultra-low-noise Class A drivers, this amplifier delivers up to 1,100 Watts RMS @ 1 Ohm, ensuring ultimate performance with impeccable sound quality. An impressive damping factor of 1,000 at 4 Ohms allows the C ONE to take full control of your speakers, regardless of the load.

More Than a Subwoofer Amplifier

While the C ONE excels at delivering massive output to subwoofers, its wide frequency response, extending up to 80 kHz, makes it suitable for use as a full-range or mid-woofer amplifier in high-end, High-Resolution Audio systems. Every component and signal path has been optimized for studio-grade performance, making the C ONE a versatile tool in any audiophile-grade setup.

Digital-Ready with Optional HDM 1 Module

With the optional HELIX Digital Input Module (HDM 1), the C ONE is ready for the digital future. The HDM 1 adds an optical SPDIF input, capable of handling audio signals up to 96 kHz, routed through a cutting-edge 32-bit BurrBrown D/A converter for pristine digital-to-analog signal conversion. This makes the C ONE an ideal match for DSP systems and modern digital sources, providing lossless, ground-isolated audio signal transmission.

TwinPower Link – Amplify Without Limits

Need even more power? The TwinPower Link feature allows two C ONE amplifiers to be bridged into a single powerhouse, enabling massive output for extreme SPL applications or heavy-duty subwoofer installations. This scalable architecture ensures that the C ONE grows with your system needs.

Advanced Power Supply & Reliability

The regulated DC-DC switching power supply ensures consistent performance, even during car battery voltage drops, and is Start-Stop capable down to 6V. The built-in microprocessor-controlled monitoring system includes temperature-regulated fan control, ensuring thermal stability under the most demanding conditions.

Integrated Active Crossover and Signal Control

The C ONE offers an integrated, active crossover with highpass, lowpass, bandpass, bass boost, and phase control, allowing for detailed tuning and integration into any advanced audio system configuration.

Special Features

Start-Stop Capability

The C ONE remains operational even when the car’s battery voltage drops as low as 6V during engine cranking, ensuring uninterrupted sound performance in modern vehicles equipped with Start-Stop systems.

High-Resolution Audio Support

With an ultra-broad frequency response up to 80 kHz, the C ONE provides lossless playback of Hi-Res audio content, faithfully reproducing the most intricate details of music in studio-grade quality.

Digital Expansion via HDM 1

The optional HDM 1 module introduces a 96 kHz SPDIF optical input, processed through 32-bit BurrBrown converters, enabling future-proof digital integration with HELIX DSPs and other high-fidelity components.

TwinPower Link for Bridged Mode Operation

With TwinPower Link, two C ONE amplifiers can be bridged into a single, ultra-powerful mono block, making it a formidable solution for high-output audio installations.

Premium Build Quality

• 24-carat gold-plated terminals for optimal conductivity
• Quad-layer PCB with 70μ copper traces for efficient power delivery
• Built with Surface Mounted Device (SMD) technology for compactness and long-term reliability

Features Summary

• 1-channel Class AB amplifier with 1,100 Watts RMS @ 1 Ohm output
• Class A ultra-low distortion driver stage
• 32 high-performance MOSFETs for precision power delivery
• Damping factor of 1,000 @ 4 Ohms for total speaker control
• Extended frequency response up to 80 kHz – perfect for High-Resolution Audio
• Optional HDM 1 module for optical digital input (96 kHz SPDIF)
• 32-bit BurrBrown D/A conversion (with HDM 1)
• Active crossover with bass boost and phase control
• TwinPower Link for bridging two C ONEs
• Start-Stop compatible (operates down to 6V)
• Microprocessor-controlled thermal management
• Premium build quality with gold-plated terminals and advanced PCB design