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Audio Affinity USA Inc. distributes Brax and Helix products only to the selected Authorized Dealer Network, and to protect the best interest of its consumers, we do not condone the purchase of any of the products obtained through any unauthorized means. Audio Affinity USA Inc. is highly dedicated to providing the best products and service possible in which an innovative training program and continued support for authorized dealers. Therefore, Audio Affinity USA Inc. assumes no responsibility and will not provide after sales service, support, or warranty coverage for any of our products that have their serial numbers removed, erased, or tampered with. In addition, Audio Affinity USA Inc. repairs and warranties are handled exclusively through Audio Affinity USA Inc. authorized dealers. If you buy from a non-authorized dealer, repairs and warrantys will have to be handled by the unauthorized dealer. Please see our dealer locator for authorized dealers in your area.
  AUDIO AFFINITY USA, INC.  
7863 Garvey Avenue
Rosemead, CA 91770
Telephone: (626) 572-2958
Telephone: (626) 572-8958
Fax: (626) 572-0839
Email:          helix@audioaffinityusa.com
competition   |  precision   |   esprit   |   dark blue
 
The new innovative Helix Competition amplifier generation is the esult of many years of experiences combined with newest technology.The perfect circuit layout and the aesthetic heatsink design present everything you can expect from a real high end amplifier.

Their enormous power and unsurpassable high end sound quality create an unforgettable experience for your ears.
Driver with class A technology
Outputstage with 24 MosFet transistors
Adjustable damping factor from > 50 - 1500
RMI (realmixed input) for forming an optimised mono-summation signal from the left and right channels
NFI (noisefree input) for distortion-free listening
Intelligent active crossover
Bass Boost Control 0-9 dB, adjustable center frequencies 30-120 Hz
Mono/Bridged/ Stereo switch
8.0 volt input for connection to any signal source
ADC - Anti Distortion Choke to eliminate distortions
Intelligent temperature and power controlled switching power supply
Separate speaker protection circuit with current limitation for speaker short-circuiting, cable contact with car chassis, low impedance and wrong connection
CPS - Color Protection System
SMD - Surface Mounting Devices for constant assembling quality
Double-sided, extra strong (2x 110u) and copper plated pc-board for best power and signal transmission and protection against vibrations
24-karat gold-plated solid connectors suitable for 25 m²/ gauge 4 cables
Temperature-optimised heatsink for highest efficiency
1% accurate components for perfect audiophile sound quality and maximum power
Smoked-grey plexi cover with both side printing
A1 COMPETITION
Mono-amplifier with adjustable damping factor and active crossovers,adjustable from 15 Hz -6 kHz,HP LP BP;phase control 0 -180 °
A1 COMPETITION
Mono-amplifier with adjustable damping factor and active crossovers,adjustable from 15 Hz -6 kHz,HP LP BP;phase control 0 -180 °
A4 COMPETITION
4-channel amplifier with active crossovers,adjustable from 15 Hz -7 kHz,HP,LP,BP
A6 COMPETITION
6-channel high end linear amplifier with adjustable subsonic filter (10 -80 Hz)on channels C and D
 
Model
A1 COMPETITION A2 COMPETITION A4 COMPETITION A6 COMPETITION
Cont.power rating
RMS/Max.power
       
at 4 Ohms RMS/12 V: 1 x 240 W 2 x 120 W 4 x 60 W 6 x 60 W
at 4 Ohms/13,8 V: 1 x 300/500 W 2 x 150/250 W 4 x 85/150 W 6 x 75/130 W
at 2 Ohms/13,8 V: 1 x 540/900 W 2 x 270/450 W 4 x 153/250 W 6 x 125/215 W
at 4 Ohms bridged:   1 x 540/900 W 2 x 270/450 W 3 x 220/350 W
at 2 Ohms bridged:   1 x 790/1300 W 2 x 395/650 W 1 x 400/640 W channel C +D
at 1 Ohm/13,8 V: 1 x 790/1300 W     2 x 200/320 W channel C +D
Frequency range: 20 Hz -20 kHz 20 Hz -20 kHz 20 Hz -20 kHz 20 Hz -20 kHz
  +/-0,3 dB +/-0,3 dB +/-0,3 dB +/-0,3 dB
Total harmonic distortion: < 0,009 % < 0,009 % < 0,009 % < 0,009 %
Signal to noise ratio: > 100 dB > 100 dB > 100 dB > 100 dB
TIM distortion: 0,016 % 0,016 % 0,016 % 0,016 %
Damping factor: > 50 -> 1500 adjustable > 1000 > 450 > 450
Fuse: 4 x 20 A 4 x 20 A 3 x 25 A 4 x 20 A
Input sensitivity: 500 mV -8 V 2 x 400 W 500 mV -8 V 500 mV -8 V
Input impedance: 10 kOhms 2 x 400 W 10 kOhms 10 kOhms
Dimensions (HxWxD)mm: 35 x 240 x 432 2 x 400 W 35 x 240 x 432 35 x 240 x 500
Weight: 4,7 kg 2 x 400 W 4,7 kg 5,5 kg