Helix Amplify 201 Direct Amplifier

Helix AMPLIFY Amplifiers

The new AMPLIFY amplifier series from HELIX offers a modern take on amplifier design. Instead of a one-size-fits-all solution, each model is focused on a specific application, ensuring maximum optimization for the intended scenario. The result is exactly what the system needs — with no unnecessary compromises.

Series 2 - the core of the AMPLIFY platform

This model range represents the technical heart of the entire series. Compact Class D amplifiers combine high power, full-bridging capability, excellent efficiency and easy integration into both OEM and aftermarket environments. The result? Detailed highs, solid mids and strong, controlled bass. Series 2 is available in DIRECT, X-OVER or DSP versions (from summer 2025) — from flexible 6-channel applications to powerful monoblocks for subwoofers, covering every possible configuration.

AMPLIFY 204 - versatile four-channel amplifier

The AMPLIFY 204 model offers four bridgeable outputs with high power and precise sound, making it an ideal choice for a wide range of installations. It is suitable for classic 4-channel setups, 3-channel configurations with a subwoofer or 2-channel bridged operation. It delivers 4 × 100 W RMS at 4 Ω, 4 × 190 W RMS at 2 Ω or 2 × 380 W RMS in bridged mode at 4 Ω. Available as an X-OVER version with an integrated active crossover or as a DIRECT version that passes the signal directly to an external DSP.

Top-level sound

The AMPLIFY 2-Series is not just an extension of the lineup — it is a clear expression of HELIX’s philosophy: to deliver premium sound and performance for specific purposes. Each model provides excellent audio quality, minimal distortion and an outstanding signal-to-noise ratio. Combined with fully bridgeable channels, flexible configurations are guaranteed even for the most demanding applications.

AMPLIFY DIRECT - built for external DSP

DIRECT models with DirectDSP inputs are designed for DSP-based audio systems that require clean, efficient and transparent amplification. By focusing on essential controls and core components, flawless operation is ensured. Removing conventional input filtering preserves uncompromised signal integrity and maximum purity throughout the signal path. A high-quality amplification stage and clipping LED enable precise level setting, while the minimalist input architecture keeps noise and distortion to an absolute minimum. A practical stereo/mono switch for each stereo input also allows bridged control using a single RCA signal — eliminating the need for external Y-adapters.

Form follows performance

The HELIX AMPLIFY 2-Series design combines modern functionality with refined technical aesthetics. Its compact dimensions allow flexible installation even in confined spaces. A removable top cover hides all connections and controls, offering added protection as well as a clean, efficient appearance that emphasizes the amplifier’s high-quality character. Matte surfaces, sharp contours and a minimalist design language create an elegant and exclusive look that integrates seamlessly into any modern vehicle interior.

Key features

• Highly efficient subwoofer amplifier with high output power up to 750 W RMS at 1 Ω — perfect for any pair of 2 × 2 Ω subwoofers wired in parallel.
• Ideal for factory system subwoofer upgrades thanks to an integrated active crossover and a high-performance high-level stereo input with input sensitivity up to 32 V RMS.
• High-level input with ADEP.3 for seamless integration into OEM audio systems.
• Crossover with low-pass, subsonic filter and phase control for optimal system tuning.
• Additional automatic turn-on via music signal for maximum compatibility with factory audio systems.
• Very compact design for space-saving installation.
• Start-stop capability down to 6 V supply voltage for uninterrupted performance.
• Advanced Class D concept for high efficiency and low heat dissipation.
• Wired remote control for volume adjustment.

Product comments

Evaluation

• Car amplifiers 1-channel car amplifiers
• German sound system manufacturer HELIX