Helix C-Four

4-channel high-power amplifier

Features

Extremely broadband Class AB amplifier with eight selected MOSFET transistors per channel for exceptional sound quality - ideal for High-Resolution audio
Ultra low-noise and distortion-free power amp drivers in Class A technology
Enormous damping factor of 1,000 @ 4 Ohms for perfect speaker control
Optionally available HELIX Digital Input Module (HDM) to extend the amplifier with two optical digital inputs in SPDIF format
Integrated, active crossover with highpass, lowpass and bandpass
Regulated DC / DC switching power supply with Start-Stop capability down to 6V supply voltage
Microprocessor-based monitoring of amplifier status including temperature-dependent fan control
Input Mode switch for flexible routing of the input signals
Cutting-edge BurrBrown D/A converters with 32 Bit resolution in combination with the optional HDM 2 module
Massive 24-carat gold-plated power and speaker terminals
Quad-layer PCB with extra-solid 70μ copper traces for lowest possible losses and SMD (Surface Mounted Device) manufacturing technology

Output power RMS ≤ 1% THD+N
- @ 4 Ohms	4 x 150 Watts
- @ 2 Ohms	4 x 220 Watts
- @ 1 Ohm	-
- bridged @ 4 Ohms	2 x 440 Watts
- bridged @ 2 Ohms	-
Max. output power per channel*	Up to 250 Watts RMS @ 2 Ohms
Amplifier technology	Class AB
Inputs	4 x RCA / Cinch 1 x Remote In Optional via HDM 2 module: 2 x Optical SPDIF (28 - 96 kHz)
Input sensitivity	RCA / Cinch 1 - 8 Volts
Input impedance RCA / Cinch	7.5 kOhms
Input impedance highlevel	-
Outputs	4 x Speaker output
Output voltage RCA / Cinch	-
Signal converter for digital input	-
Frequency response	10 Hz - 80,000 Hz
Bass boost	-
Highpass	15 Hz - 4,000 Hz adjustable
Lowpass	15 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	112 dB (A-weighted)
Distortion (THD)	< 0.007 %
Damping factor	> 1000
Operating voltage	9 - 16 Volts (max. 5 sec. down to 6 Volts)
Idle current	2400 mA
Operating temperature range	-40° C to +70° C
Fuse	3 x 30 A LP-Mini-fuse (APS)
Additional features	Active, adjustable crossover, HDM slot, input mode switch, High-Resolution audio, Start-Stop capability
Dimensions (H x W x D)	37.1 x 430 x 240 mm

$2,999.00

Tax included. Shipping calculated at checkout.