Audiotec Fischer Amplifier HELIX M FOUR 4-Channel - HA14107
Audiotec Fischer Amplifier HELIX M FOUR 4-Channel
If you like to rev up your front and rear speakers, the M FOUR will be exactly the right "tool" to do so. With generously 100 Watts RMS per channel into both 4 Ohms and 2 Ohms load this amp will heat up your voice coils in no time despite its super-compact dimensions. On the other hand the M FOUR stays totally cool thanks to the highly efficient Class D design topology. 3-channel or 2-channel configurations are possible as well, delivering up to 2 x 200 Watts RMS of clean and undistorted output power.
Needless to say that the M FOUR is equipped with a bunch of intelligent attributes like "start-stop capability" and our proprietary "ADEP" highlevel input so that it easily deals with all installation challenges of modern cars. Finally the extensive audio features will offer a sound quality at its best.
Key Features
- Smart highlevel input
The latest generation of OE car radios incorporates sophisticated possibilities of diagnosing the connected speakers. If a common amplifier will be hooked up failure messages and loss of specific features (e.g. fader function) quite often appear - but not with the M FOUR.
The new ADEP circuit (Advanced Diagnostics Error Protection) avoids all these problems without loading the speaker outputs of the OE radio during high volumes unnecessarily. - Start-Stop capability
The switched power supply of the HELIX M FOUR assures operation even if the battery’s voltage drops down to 6 Volts during engine crank.
Features
- Small footprint Class D amplifier with high output power of 100 Watts RMS @ 4 and 2 Ohms load
- Start-Stop capability down to 6V supply voltage
- Smart highlevel input with ADEP circuit (Advanced Diagnostics Error Protection) and Auto Turn-On function
- Integrated, active crossover with highpass, lowpass and bandpass
- “Input mode” switch for flexible input signal routing
- SMD (Surface Mounted Device) manufacturing technology combines minimum space requirement with maximum reliability
- Exclusive, extremely compact and clean design with illuminated HELIX-logo and low heat dissipation thanks to extraordinary efficiency
General
Approximate Weight
Approximate Dimensions
Guides
Frequently Asked Questions
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This amplifier outputs 100 Watts RMS per channel at both 4 ohms and 2 ohms, delivering a total power of up to 135 Watts RMS across channels, ensuring strong and clear audio performance.
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It uses Class D amplifier technology, which is highly efficient, producing less heat while delivering powerful sound output with minimal distortion.
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Yes, it features a smart high-level input with an Advanced Diagnostics Error Protection (ADEP) circuit and an auto turn-on function, allowing it to adapt well to various modern car audio installations.
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The frequency response ranges from 10 Hz to 30,000 Hz, complemented by adjustable low pass and high pass filters (40 Hz - 4,000 Hz for low pass, 15 Hz - 4,000 Hz for high pass), which help tailor the sound output to your preferences.
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The amplifier has a compact footprint with dimensions approximately 9.06 inches wide, 6.06 inches deep, and 2 inches high, and weighs around 6 pounds, making it easy to install in tight spaces.

