New M FOUR now available in 24V version!

The physical size of the Helix M-series amplifiers is very small, although the feature list and power are large. This is possible thanks to advanced D-class technology.

A smart speaker-level input works even in new cars thanks to the ADEP circuit. And this amplifier won't turn off at every traffic light either, thanks to Start&Stop compatibility. The distribution filters have a wide enough range of adjustment to make distributions from subwoofer to tweeter and in between.

Despite their small size, Helix's M-Series offer plenty of power and, above all, the excellent sound quality Helix has been known for as a manufacturer for decades.

Output power RMS ≤ 1% THD+N    

- @ 4 Ohms    4 x 100 Watts

- @ 2 Ohms    4 x 100 Watts

- @ 1 Ohm    -

- bridged @ 4 Ohms    2 x 200 Watts

- bridged @ 2 Ohms    -

Max. output power per channel*    Up to 135 Watts RMS @ 4 / 2 Ohms

Amplifier technology   Class D

Inputs    4 x RCA / Cinch

4 x Highlevel speaker input

1 x Remote In

Input sensitivity   RCA / Cinch 0.5 - 6 Volts

Highlevel 1.3 - 13 Volts

Input impedance RCA / RCA    20 kOhms

Input impedance highlevel   9 - 33 Ohms

Outputs    4 x Speaker output

Output voltage RCA / Cinch     -

Signal converter for digital input    -

Frequency response    10 Hz - 30,000 Hz

Bass boost    -

Highpass   15 Hz - 4,000 Hz adjustable

Lowpass   40 Hz - 4,000 Hz adjustable

Bandpass    15 Hz - 4,000 Hz adjustable

Subsonic    -

Phase    -

Slope high/lowpass    12 dB/Oct.

Slope subsonic / lowpass    -

Signal-to-noise ratio digital input    -

Signal-to-noise ratio analog input    98 dB (A-weighted)

Distortion (THD)    0.05 %

Damping factor    100

Operating voltage   18 - 36 Volts (max. 5 sec. down to 12 Volts)

Idle current    550 mA

Fuse   2 x 15 A Maxi-fuse (APX)

Power rating    DC 24 V ⎓ 25 A max.

Additional features    Active, adjustable crossover, input mode switch, Start-Stop capability, highlevel input with automatic turn on function and Advanced Diagnostics Error Protection (ADEP)

Dimensions (H x W x D)   50 x 230 x 154 mm /

2.00 x 9.06 x 6.06"