• Helix D-Four - 4 Channel Amplifier with Integrated Crossover


  • $299.00 $399.00

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The new entry into the HELIX world! The amplifiers of the D series are solely modest with respect to pricing. Everything else is thoroughly pure HELIX quality without any compromises. Loads of power, excellent measurement data and a whole bunch of features ensure a pristine and crispy sound experience!


Absolutely nothing has been missed for powerful sound reproduction - the active crossover with highpass filter, lowpass filter, bandpass and bass boost are equally as self-evident as the intelligent high-level input that incorporates Audiotec Fischer´s proprietary ADEP circuit. It is even possible to add an optional volume remote control for the amp channels C and D which is very useful if those outputs are firing a subwoofer. 

The elegant design not only states right from the beginning the amp's heritage but also allows an easy integration into your car thanks to its compact dimensions. That is sound-tuning at its best!



  • 4-channel high and low level input
  • Smart highlevel input with ADEP circuit (Advanced Diagnostics Error Protection) and Auto Turn-On function
  • Fully active crossover with highpass, lowpass, bandpass and bass boost
  • Extremely stable MOSFET power supply
  • “Input mode” switch for flexible input signal routing
  • Highlevel input sensitivity up to 14 Volts max.
  • Cable remote control for volume adjustment of the channels C & D optionally available
  • Amplifier technology: Class A/B
  • Massive aluminum heatsink for best cooling conditions
  • 4 x 65/95rms @ 4/2ohms 
  • 53 x 320 x 230 mm