• HA12109
  • DE 29323089

Press & awards



Amplifier Class

Class AB Feature


Highlevel Input Feature RCA Input Feature ADEP Feature

Hardware Technologies

Surface Mounted Device Active Crossover Feature

Additional Features

Start Stop Capability Feature Remote Control Included Feature


The new G amplifiers are more than just impressive power packs. They unite innovative technology, extensive functionality and best sound with a very attractive price to performance ratio.

If we do not talk about their more obvious features, such as fully active crossovers with highpass, lowpass, bandpass, bass boost and input mode switch for flexible input signal routing and smart high level input with ADEP circuits, we can still talk about how the G series also provides Start-Stop capability which is an exceptional feature in this price range. Wait, that’s not all… a remote control for adjusting the subwoofer level is included as part of the deal.

With such an extensive list of features in this piece of equipment, it is really not hard to realize a sound system in your car that has a great sound and lots of power for when you need it most.

Furthermore, the G amplifiers have the compact and straight HELIX design that has become synonymous with HELIX. In addition, for those who love a good light show, the logo has been illuminated for your viewing pleasure.


  • Start-Stop capability down to 6V supply voltage
  • Smart highlevel input with ADEP circuit (Advanced Diagnostics Error Protection)
  • Fully active crossover with highpass, lowpass, bandpass and bass boost
  • Extremely stable output stage with high-current power transistors
  • Cable remote control for volume adjustment of the channels A and B
  • “Input mode” switch for flexible input signal routing
  • Highlevel input sensitivity up to 14 Volts max.
  • 2-channel PreOut for the connection of additional amplifiers
  • SMD (Surface Mounted Device) manufacturing technology combines minimum space requirement with maximum reliability
  • Exclusive compact and clean design with illuminated HELIX logo


Special 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 appears - but not with the G TWO.
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 G TWO assures operation even if the battery’s voltage drops down to 6 Volts during engine crank.

Technical data

Output power RMS / max.  
- @ 4 Ohms 2 x 125 / 250 Watts
- @ 2 Ohms 2 x 200 / 400 Watts
- @ 1 Ohm 2 x 300 / 600 Watts
- bridged @ 4 Ohms 1 x 400 / 800 Watts
- bridged @ 2 Ohms 1 x 600 / 1,200 Watts
Amplifier technology Class AB
Inputs 2 x RCA / Cinch
2 x Highlevel speaker input
1 x Remote In
1 x Remote control input
Input sensitivity RCA / Cinch 1 - 6 Volts
Highlevel 2.5 - 14 Volts
Input impedance RCA / Cinch 30 kOhms
Input impedance highlevel 12 Ohms
Outputs 2 x Speaker output
2 x RCA / Cinch
Output voltage RCA / Cinch 1 - 6 Volts RMS
Signal converter for digital input
Frequency response 10 Hz - 40,000 Hz
Bass boost 0 - 12 dB / 45 Hz
Highpass 15 Hz - 4,000 Hz adjustable
Lowpass 40 Hz - 4,000 Hz adjustable
Bandpass 15 Hz - 4,000 Hz adjustable
Slope high- / lowpass Butterworth 12 dB/Oct.
Slope subsonic / lowpass
Signal-to-noise ratio digital input
Signal-to-noise ratio analog input 106 dB (A-weighted)
Distortion (THD) 0.02 %
Damping factor 200
Operating voltage 9.6 - 16 Volts (max. 5 sec. down to 6 Volts)
Idle current 1000 mA
Fuse 2 x 30 A Maxi-fuse (APX)
Additional features Active, adjustable crossover, bass boost, input mode switch, highlevel input with automatic turn on function and Advanced Diagnostics Error Protection (ADEP), Start-Stop capability, remote control for volume adjustment
Dimensions (H x W x D) 57 x 334 x 241 mm /
2.24 x 13.15 x 9.50”

Scope of delivery

1 x Amplifier HELIX G TWO
1 x Cable remote control
1 x Mounting material
1 x Instruction manual

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