HELIX AMPLIFY 201 X-OVER

HELIX AMPLIFY 201 X-OVER

• Mono amplifier
• Class D
• 750W @ 1 Ohm
• Speaker level input
• Wired level control

With the new AMPLIFY series, HELIX redefines modern amplifier design!

Rather than designing one amplifier to do it all, the Amplify series offers multiple models tailored to a specific application. This clear philosophy ensures that each model offers exactly what you need, and nothing more.

The Amplify series comes in three different versions: DIRECT, X-OVER and DSP (the DSP model will be available in summer 2025).

X-OVER models are ideal for traditional car installations using either a factory or aftermarket stereo. These amplifiers feature speaker-level input and wide crossovers.

The DIRECT models do not need to pass the signal through crossover circuits, which allows for better sound quality and more precise adjustments. These amplifiers are intended for systems with a separate DSP device. As the name suggests, the DIRECT series amplifiers do not have crossover filters at all, but all adjustments are made by a separate DSP device.

The 2-Series is the most affordable model in the AMPLIFY series, yet offers extensive features and incredible sound quality in a compact size.

The wide crossover filters of the X-OVER amplifiers can be switched off when needed and adjustments can be made from the player or a separate DSP device. The signal can be fed to the device via RCA or speaker level and the device will wake up automatically if necessary (auto remote On / Off).

The Amplify 2 Series brings out every nuance of sound, exceeding expectations for its price range in both sound quality and power.

Specifications:
Technical data

Power RMS ≤ 1% THD+N @ 14.4 V
- @ 4 Ohms 1 x 250 Watts
- @ 2 Ohms 1 x 450 Watts
- @ 1 Ohm 1 x 750 Watts*
- bridged @ 4 Ohms -
- bridged @ 2 Ohms -
Max. output power Up to 850 Watts RMS @ 1 Ohm
Amplifier technology Class D
Inputs 1 x RCA / Cinch
2 x High-level speaker input
1 x Remote In
1 x Remote control input
Input sensitivity RCA / RCA: 0.5 - 6 Volts
High level: 3 - 32 Volts
Input impedance RCA / RCA: 8 kOhms
High level: 9 - 33 Ohms
Outputs 1 x Speaker output
Output voltage RCA / Cinch -
Signal Converter for digital input -
Frequency response 10 Hz to 250 Hz
Bass boost -
Highpass -
Lowpass 50 Hz - 250 Hz adjustable
Bandpass -
Subsonic 10 Hz - 50 Hz adjustable
Phase 0° - 180° adjustable
Slope high- / lowpass Lowpass: 12 dB/Oct.
Slope subsonic 12 dB/Oct.
Slope subsonic / lowpass -
Signal-to-noise ratio (A-weighted) 114 dB @ full power
Distortion (THD @ 1 kHz, 1 W into 4 Ohms) -
Distortion (THD+N @ 1 kHz, 1 W into 4 Ohms) -
Distortion (THD @ 100 Hz, 1 W into 4 Ohms) 0.003%
Distortion (THD+N @ 100 Hz, 1 W into 4 Ohms) 0.02 %
Damping factor 200
Operating voltage 10.5 - 16 Volts (max. 5 sec. down to 6 Volts)
Idle current 1,100 mA
Fuse 2 x 30 A LP-Mini-fuse (APS)
Power rating DC 12 V ⎓ 80 A max.
Operating temperature range -40 °C to +70 °C
Additional features Active, adjustable crossover, Start-Stop capability, high-level input with automatic turn-on function, ADEP.3
Dimensions (H x W x D) 40 x 248 x 114 mm /
1.58 x 9.76 x 4.49”

Scope of delivery
1 x Amplifier HELIX AMPLIFY 204 X-OVER
1 x Cable remote control
2 x Allen keys
1 x Connection cable
2 x Fuses
1 x Mounting material
1 x Instruction manual