HELIX AMPLIFY 204 X-OVER – 4-Channel Amplifier
Upgrade your vehicle's sound system with the HELIX AMPLIFY 204 X-OVER 4-Channel Amplifier, designed to deliver impressive power, exceptional sound clarity and flexible system configurations.
Featuring advanced Class D amplification, the AMPLIFY 204 X-OVER provides clean, dynamic sound reproduction while maintaining excellent efficiency and a compact installation footprint.
With 4 × 100W RMS at 4 Ohms or 4 × 190W RMS at 2 Ohms, this amplifier is ideal for powering premium component and coaxial speaker systems.
The bridgeable design provides additional flexibility, allowing channels to be combined to power compatible higher-demand speakers or subwoofers.
Integrated adjustable crossover controls allow frequency ranges to be tailored to the connected speakers, helping improve sound clarity, protect against unwanted low-frequency output and achieve a more balanced listening experience.
Key Features
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Compact 4-channel Class D amplifier
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4 × 100W RMS at 4 Ohms
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4 × 190W RMS at 2 Ohms
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2 × 380W RMS bridged at 4 Ohms
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Adjustable crossover controls
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DirectDSP functionality for external signal processing
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Flexible 4-channel and bridged configurations
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High-efficiency Class D technology
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Compact design for discreet installation
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Engineered by Audiotec Fischer, Germany
Technical Specifications
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Brand: HELIX
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Model: AMPLIFY 204 X-OVER
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Amplifier Type: 4-Channel
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Amplifier Class: D
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RMS Power at 4 Ohms: 4 × 100W
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RMS Power at 2 Ohms: 4 × 190W
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Bridged RMS Power at 4 Ohms: 2 × 380W
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Frequency Response: 10Hz – 20kHz
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Total Harmonic Distortion: 0.02%
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Signal-to-Noise Ratio: 99dB
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Damping Factor: 70
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Amplifier Dimensions: 248 × 124 × 40mm
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Manufacturer-Listed Weight: 3.1kg
Important Information
The AMPLIFY 204 X-OVER is suitable for premium aftermarket speaker upgrades and compatible custom automotive audio systems.
Its integrated crossover controls allow it to operate without requiring a separate DSP for basic frequency management.
Professional installation is recommended to ensure appropriate wiring, impedance matching and crossover configuration.
Sold individually. Speakers, subwoofers, wiring kits and installation accessories are not included.
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HELIX AMPLIFY 204 X-OVER – 4-Channel Amplifier
Let customers speak for us
Installed a false floor in my Prado 250 gxl 7 seater. Great fit. Easy to install myself. Looks factory fitted. Provides so much more room.
Better than I expected, amazing fit and look.
Paul from Pinjarra WA
Love it. Great quality product.
Fantastic product great quality and looks amazing in my 79 and I can hear my music now
Very happy with the new door trims they look fantastic. New speakers in the front doors sound so much better
Centre console for my Hdj79 came up so mint! Looks like it belongs there from factory besides how nice it is
Very happy with the console its a perfect fit and looks good wiring kit made things simle for me , I thoureouly recomend this product
Absolute master piece, fits so seamlessly. There’s honestly no other product that fits so well and has such quality workmanship. It’s a no brainer
Stoked with the outcome
The doti console is excellent it is a perfect fit and I finaly have somewhere comfortable to rest my arm when I’m driving it was well worth the exspence very happy.
The Prado Rear Seat Delete platform is very well built an I would highly recommend to others !
I have brought many products from this company over the years, mostly from third party suppliers like ARB or TJM & having them fitted by the same company
When it came time to build my new 79 series I already knew what I wanted & where I was going to purchase it
As always the quality of the product is faultless and fitment of my centre console, roof console , door trims & speaker pods was very simple
The improvement to the comfort of the car is extremely impressive & functional
Department of The Interior has remained at the top of the league with their products for the facelift series 79
Brilliant. It just fits! Easy to install. Beautiful finish. Skip the rest and get this.
Ordered the premium floor console with scan gauge for my 2024 troopy, excellent fit and build quality is top notch! Should’ve come like this from factory
Quality product. The front mounting doesn't line up easy enough. Hole needs to be in a different position
Exactly as described, fits and works perfectly