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Helix H 400X 4 channel German Car Audio Amplifier

$1,700.00

The best of both worlds – extremely fast MOSFET driver circuits in Class A operation combined with enormously load-stable, power-potent “afterburners” in bipolar technology. This is the recipe for success for the particularly flat amplifiers, which, thanks to their sophisticated processor control, don’t get their feathers ruffled in any situation. Improved again and again over the years, these powerhouses with the characteristic, transparent enclosure covers have reached a sound level that is unrivaled, not only in the value-for-money category.

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Description
Output power RMS / max. 
 at 4 Ohms 4 x 70 Watts / 140 Watts
 at 2 Ohms 4 x 125 Watts / 250 Watts
 at 4 Ohms bridged 2 x 250 Watts / 500 Watts
Frequency response
 20 Hz - 20,000 Hz
Highpass 15 - 4,000 Hz adjustable
Lowpass 15 - 4,000 Hz adjustable
Bandpass 15 - 4,000 Hz adjustable
Total harmonic distortion (THD) < 0.009 %
Signal-to-noise ratio > 100 dB
Damping factor > 300
Input sensitivity
 0.7 - 8 Volts

Dimensions (H x W x D)

 31.5 x 200 x 336 mm

 1.24 x 7.87 x 13.23"

  • Extremely stable amplifiers in an extraordinary shallow heatsink
  • Unique Bipolar output transistor technology for unparalleled natural and warm sound experience
  • Fastest drivers for lowest possible THD
  • Processor-controlled technology for optimized operation
  • Fully active crossover with highpass, lowpass and bandpass filter
  • "Input mode" switch for flexible input signal routing
  • RMI (Realmixed Input) for generating an optimised mono-summing signal from
    the left and right channels
  • Smart protection circuits against overheating, over- and undervoltage, speaker short circuiting, low impedance and faulty connection
  • 24 carat gold-plated solid connection terminals suitable for 25 mm² / gauge 4
  • Completely made in Germany by using only selected components
Additional information
Weight 10 kg
Dimensions 40 × 10 × 30 cm
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