Helix Amplify 204
HELIX AMPLIFY – Power. Clarity. Purpose.
With the AMPLIFY series, HELIX redefines the idea of modern amplifier design – by reinterpreting classic concepts through the lens of today’s audio demands. Rather than designing one amplifier to do everything, the focus lies on specialized models, each tailored for a specific type of application. This clear philosophy ensures every variant delivers exactly what’s needed – and nothing you don’t.
The 2-Series marks the entry into the AMPLIFY platform – and forms its technical and tonal core. These compact Class D amplifiers combine powerful performance, a fully bridgeable multi-channel architecture, and excellent efficiency with seamless real-world integration. Brilliant and precise treble, a controlled mid-range as well as tight, powerful bass – the 2-Series brings out every nuance of natural, powerful sound, outperforming the expectations of its class in both sound quality and output. Whether as a DIRECT, X-OVER, or DSP variant: from flexible 6-channel setups for fullrange applications to dedicated mono powerhouses for subwoofers – the 2-Series offers tailored solutions for every configuration.
AMPLIFY 204 – The versatile solution for fullrange applications
The AMPLIFY 204 amplifiers combine four fully bridgeable outputs with outstanding sound quality and impressive performance – ideal for powerful front-end or multi-channel setups. Whether as a classic 4-channel system, a 3-channel configuration with subwoofer, or a bridged 2-channel layout: the 204 adapts flexibly to a wide range of vehicles and system requirements. With an output of 4 x 100 watts RMS at 4 Ω, 4 x 190 watts RMS at 2 Ω, or 2 x 380 watts RMS bridged at 4 Ω, it delivers more than enough power for ambitious setups. Available as an X-OVER version with integrated active crossover or a DIRECT model optimized for pure signal transmission via external DSPs – always with a focus on superior sound performance
Technical data
| Power RMS ≤ 1% THD+N @ 14.4 V | |
| - @ 4 Ohms | 4 x 100 Watts |
| - @ 2 Ohms | 4 x 190 Watts |
| - @ 1 Ohm | - |
| - bridged @ 4 Ohms | 2 x 380 Watts |
| - bridged @ 2 Ohms | - |
| Max. output power per channel* | Up to 240 Watts RMS @ 2 Ohms |
| Amplifier technology | Class D |
| Inputs | 4 x RCA / Cinch 1 x Remote In |
| Input sensitivity | 1 - 8 Volts |
| Input impedance | 67 kOhms |
| Outputs | 4 x Speaker output |
| Output voltage RCA / Cinch | - |
| Signal converter for digital input | - |
| Frequency response | 10 Hz - 20,000 Hz |