HELIX AMPLIFY 201 X-OVER

HELIX AMPLIFY 201 X-OVER

• Mono amplifier
• Class D
• 750W @ 1 Ohm
• Speaker-level input
• Wired level control
• Dimensions: 40 x 248 x 114 mm (H x W x D)

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

Instead of designing one amplifier to do everything, the Amplify series offers several models tailored for specific applications. This clear philosophy ensures that each model provides exactly what you need, and nothing superfluous.

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

X-OVER models are an ideal choice for traditional installations in cars using either factory or aftermarket head units. These amplifiers feature, for example: speaker-level input and extensive crossovers.

The signal in DIRECT models does not need to pass through crossover circuits, which makes it possible to achieve better sound quality and more precise adjustments. These amplifiers are intended for systems with a separate DSP device. As their name suggests, DIRECT series amplifiers have no crossovers at all; all adjustments are made with a separate DSP device.

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

The extensive crossovers in X-OVER model amplifiers can be switched off if needed, and adjustments can be made from the head unit or a separate DSP device. The signal can be fed to the device via RCA or speaker level, and the device automatically wakes up if necessary (auto remote On / Off).

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

Technical 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 Highlevel speaker input
1 x Remote In
1 x Remote control input
Input sensitivity RCA / Cinch: 0.5 - 6 Volts
Highlevel: 3 - 32 Volts
Input impedance RCA / Cinch: 8 kOhms
Highlevel: 9 - 33 Ohms
Outputs 1 x Speaker output
Output voltage RCA / Cinch -
Signal converter for digital input -
Frequency response 10 Hz - 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, highlevel 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 key
1 x Connection cable
2 x Fuse
1 x Mounting material
1 x Instruction manual