Description
xHELIX C FOUR 4CH High End Reference Amplifier
Audiophile sound quality combined with impressive output power
The C FOUR is a high-end 4-channel amplifier that has been designed down to the last detail for ultimate sound quality. Audiotec Fischer’s proprietary ultra low-noise and ultra low-distortion Class A driver stage feeds a total of 32 hand-selected MOSFET power transistors, resulting in an incredible damping factor of 1,000 for relentless control of every loudspeaker. The intelligent regulation of the power supply assures stable conditions for the output stages and therefore phenomenal output power independent of the cars battery voltage.
In combination with the optionally available digital input module HDM 2, the C FOUR demonstrates the perfect transition to the digital era. The HDM 2 accepts digital audio signals up to 96 kHz sampling rate via its two optical inputs followed by cutting-edge BurrBrown D/A converters with 32 Bit resolution that transform the signals back to the analog domain. Therefore the C FOUR is absolutely future-proof and perfectly prepared for the combination with our digital signal processors.
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
Start-Stop capability
The switched power supply of the HELIX C FOUR assures operation even if the battery’s voltage drops down to 6 Volts during engine crank.
High-Resolution audio
The extremely broadband audio bandwidth of the amplifier ensures a lossless audio reproduction of High-Resolution audio content to provide the best possible sound in studio quality.
Specifications
|
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 |
|
Input sensitivity |
RCA / Cinch 1 - 8 Volts |
|
Input impedance RCA / Cinch |
7.5kOhms |
|
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 |
|
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 / |
For more information, please visit the manufacturer's website.
Shipping & Returns
xStandard Shipping
We offer a $15 flat rate Australia-wide shipping service, no matter how many items, however large or heavy items may incur a higher freight charge. If your item is subject to additional freight charges, this will be communicated to you when your order is processed. You are able to cancel your order and receive a full refund if you do not accept the additional freight charges. If any damage occurs during shipping, it is the responsibility of the customer to notify us within 24 hours of the order arriving. This is a requirement of our freight insurance and we are unable to lodge any claims after 24 hours from delivery.
Express Shipping
For express shipping, we offer a $30 flat rate Australia-wide shipping, however, larger/heavier items and remote areas may incur additional/higher fee which will be communicated with you at the time of processing your order.
In-store pickup
Any order can be picked up in-store, located at 9 Strathaird road Bundall 4217, during our regular business hours for no freight or handling fees. We request 2-4 business to process the order but often will have it ready in less time. For security reasons, when picking up in-store you must present photo ID if you have paid online via credit card. The card holder must be the person picking up the order.
P.O. Boxes and Parcel Lockers
Unfortunately, GCCS are unable to ship to PO Boxes or Parcel Lockers for insurance reasons at this time, an alternate shipping option may be offered. Additional fees may be applicable.
International Addresses
GCCS do not ship internationally at this time.
Warranties, Returns and Refunds
All products sold by GCCS come with a minimum 12 month warranty as stipulated by Australian consumer law. If your product is defective please contact us to organise the return of the item. All products are sent back to the manufacturer for assessment and either repair or replacement. Manufacturers can take up to four weeks for goods to be repaired. All goods are subject to the manufacturers terms and conditions for repair or replacement. Please contact us for further information. Any unopened item can be returned within 30 days of delivery for a refund less 20% re-stocking fee and freight costs. If the item has been opened, unpacked or used please advise us to discuss options. GCCS will pay freight charges on any orders returned if the order is the result of our error. Refunds are paid back to you by the same method of payment for that order. Refunds can take 48-72 hours after the item has been received by our store. To organise the return of an item, please contact us before sending the item to ensure prompt service.
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