Helix Amplify 204 Direct Amplifier

HELIX AMPLIFY Amplifiers

The new AMPLIFY series from HELIX offers a modern approach to amplifier design. Instead of a one-size-fits-all solution, each model focuses on a specific application, ensuring optimal adaptation to the intended scenario. The result is exactly what the system needs—without unnecessary compromises.

2-Series – the core of the AMPLIFY platform

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

AMPLIFY 204 – versatile four-channel amplifier

The AMPLIFY 204 offers four bridgeable outputs with high power and precise sound, making it an ideal choice for a wide range of installations. It’s suitable for classic 4-channel setups, 3-channel systems 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 with an integrated active crossover or as DIRECT, which passes a pure signal to an external DSP.

Top-tier sound

The AMPLIFY 2-Series is more than just a line extension – it is a clear statement of HELIX’s philosophy: deliver top audio quality and performance tailored to specific uses. Each model provides excellent sound quality, minimal distortion and an outstanding signal-to-noise ratio. Combined with fully bridgeable channels, the range guarantees flexible configuration even for the most demanding applications.

AMPLIFY DIRECT – built for external DSP

The 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 guarantees uncompromised signal integrity and maximum purity throughout the signal path. A high-quality gain stage and clipping LED allow precise level adjustment, while the minimalist input architecture keeps noise and distortion to an absolute minimum. A practical stereo/mono switch for each stereo input also enables 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 enable flexible installation even in tight spaces. A removable top cover conceals all connections and controls, providing additional protection and a clean, efficient look that underlines the amplifier’s premium character. Matte surfaces, sharp contours and a minimalist design language create an elegant, exclusive appearance that integrates seamlessly into any modern vehicle interior.

Key features

• Highly efficient amplifier with output power up to 240 W RMS at 2 Ω per channel for impressive dynamics and powerful sound.
• Bridgeable output channels for flexible system configuration and maximum output power.
• Very compact design for space-saving installation.
• Start-stop capable down to 6 V supply voltage for uninterrupted performance.
• Clipping LED for easy and fast gain setting.
• Designed for HELIX DSP - DirectDSP input perfectly tuned for maximum signal quality and performance.
• Advanced Class D concept for high efficiency and low heat dissipation.

About the brand

HELIX by Audiotec Fischer is a German brand of premium car audio equipment that has been among the world leaders in amplifiers and DSP processors for more than 35 years. HELIX is regarded as a leader in digital signal processors, offering some of the most advanced and highest-quality DSPs in the world, which allow an experienced technician to tune any audio system to perfection and bring an authentic hi‑fi experience into the car. The combination of precise German engineering, cutting-edge technologies and innovative design delivers clean, dynamic and detailed sound that has won the favor of audiophiles worldwide. HELIX products are characterized by high efficiency, reliability and perfect integration into modern vehicles. They are an excellent choice for demanding users who require the best possible sound without compromise. Helix, together with the brands Brax and Match, is part of the German manufacturer Audiotec Fischer.

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• Car amplifiers 4-channel car amplifiers
• German sound system manufacturer HELIX