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Hifonics ALPHA Series A800.4D Compact 800 Watt Four Channel Full Range Super D-Class Car Amplifier

Frys#: 9981306 Model: A800.4D
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None Provided800 watt Hifonics ALPHA series compact four channel Super D-Class® car audio amplifier with electronic crossovers utilizing Ultra-Fi MOSFETS for high power and effiencey cooling with minimal distortion.

ALPHA car audio from Hifonics brings together the best design and engineering achievements from nearly 4 decades of driving the advancement of car audio. Technological advances like SUPER D-CLASS® and now FULL RANGE SUPER D-CLASS® have given ALPHA amplifiers the Power From The Gods. The SUPER D-CLASS digital chip technology provides extremely efficient, low temperature, high system power in order to run cool from 4-Ohm to 1-Ohm.

Detailed Description
(Manufacturer # A800.4D )
  • Low Noise Preamplifier Circuitry Maximum low voltage signal from the source unit comes into the amplifier through a low voltage circuit which delivers minimal distortion through the amplification process
  • RCA Inputs Nickel plated RCA connectors for audiophile signal quality and maximum signal throughput with minimum distortion and maximum external noise rejection
  • Operation Mode Flexible installation allows this amplifier to run in four channel or bridged mono mode
  • Crossover Type Accu-Cross crossovers allow for complete control of the signal directing to all speakers. See specifications section for specific frequencies
  • Electronic Equalizer Control of amplifier output with on board electronic crossover to tailor specific frequencies to speakers and subwoofers. Check specifications for specific frequencies for this amplifier
  • CLASS / Topology Developed over 4 decades of engineering to deliver the highest level of sound quality and power efficiency, Hifonics ALPHA Full Range Super D-Class® circuitry results in lower distortion, higher current efficiencies and while producing less heat than conventional amplifier designs
  • Output Device Technology The Ultra-Fi™ MOSFET is designed for music production vs just electronics output power. It produces very musical high power with high efficiency for cooling and minimal distortion
  • Heat Sink Heavy duty aluminum alloy heat-sink efficiently moves heat from the MOSFET where it can be cooled
  • Power Supply The Twin Turbo Coil PS is a Pulse Width Modulated power supply keeps voltage constant through the Ultra-Fi output devices
  • Output Connections Nickel plated, high temperature impact resistant with hex screw terminals that allow for secure connections and is erosion resistant
  • Connection Type Secure connection for all power, ground and speaker connections. Angled for ease of access during installation.
  • LED System Protection Circuitry Diagnostics Monitor overload and speaker short protection with illuminated indicators on the amplifier end panel
  • Auto Turn-on The amplifier detects a voltage rise (6 volts) with a "DC Offset" over the connected input signal on the HIGH LEVEL INPUTS when the head unit or source unit is switched on. Thus, the amplifier will also be turned on. When the source unit is turn off the amplifier is also turned off. Using this feature eliminates the need to use the REM (turn on wire) The AUTO TURN-ON function will work with 90% of all source units because they are equipped with "high power" output. Only a few older head units will not use this function
  • Full Range Digital Mono amplifiers focus on only subwoofer frequencies with Super D Class®, high efficiency/high power technology to deliver maximum wattage. With this focus on engineering, ALPHA delivers big sound while remaining very musical in a compact chassis is the result.
  • SMT Inside With Surface Mount Technology the typical "through-hole" placement and the larger tolerances from human placement is dramatically improved. In addition, circuit engineers can design better circuits for power and sound quality as the tolerances of SMT components are superior to larger "through-hole" components.
    Because of their lower mass SMT components withstand shock and vibration making them perfect for audio designed for all vehicles.
  • 300KHZ High Speed Pulsing The switching speed of the Class D chip puts the amplifier sampling frequencies at over 100 times higher than human ears can hear. This means that the amplifier and the very fast digital switching remains un-hearable in the audio bandwidth for music.
Compact Design
When comparing the innovative ALPHA designs to traditional Hifonics amplifier layouts, the difference is amazing. Pictured below are the BRUTUS BXX3000.1D and the ALPHA A3000.1D amplifiers with their heatsink difference clearly illustrated. The ALPHA footprint is reduced by 25% over standard Hifonics amplifiers. The engineers accomplish this without any reduction in aluminum mass-to-power ratio.

The four channel BXX-800.4 comparison is equally as startling when compared to the A800.4 ALPHA.
With four decades of Hifonics engineering and innovation, ALPHA series amplifiers have the best of every amplifier component completely redesigned and re-engineered. This intense design engineering and circuit design has led to very low noise sound quality pre-amplifier sections with electronic components with minimal crosstalk. This is all accomplished with surface mount component and thick PC boards. The crossovers have been redesigned to maximize sound shaping controls across all amplifiers.

The biggest change which is an ALPHA exclusive is the voltage matched, tight tolerance and hand selected components which are marked as proprietary with the Hifonics logos, visible only when the bottom is removed or when on display with an ALPHA retailer. This assures that you are getting components selected by Hifonics engineers for the ALPHA series and nowhere else on the planet.
ALPHA 2 and 4 channel amplifiers have a feature to make integration with a factory radio or source unit really easy. The amplifier will sense when a signal voltage rise through the connected input wires which travels through the RCAs. This means that you can easily integrate the ALHPA amplifier into an OEM installation without spending additional money on a Line Output Converter (LOC).
The ALPHA line has a Hybrid. Due to the incredible engineering of the circuit layout and the high power components being layout in a way that high power/high voltage cross talk are minimized, the team has been able to accomplish a 5 channel ALPHA Amplifier which maximizes efficiency and minimized any electrical interference.
All that power packed in one amplifier makes system design a breeze. Easily integrate into your OEM system using all 5 channels of ALPHA power with ALPHA speakers front and rear with an ALPHA subwoofer. Simple in concept but shocking in the sound it will deliver.
Additionally, all ALPHA amplifiers feature:
  • Ultra-Fi" MOSFET - Produces high power with minimal distortion
  • T3 (Twin Turbo Toroid) power supply torroids
  • Pulse Width Modulated MOSFET Power supply
All Mono and five channel amplifiers include an HFR-31 bass remote to put the bass control at arms length. The amplifiers protection condition is also shown by blue illumination for normal operation and red for a short being present that requires the attention of an installer.
Class Full Range Super D-Class®
Total Channels 4
Power @ 2 Ohms 4 x 200 Watts
Power @ 4 Ohms 4 x 100 Watts
Mono Bridged @ 4 Ohms 2 x 400 Watts
Crossover Switched
Input Mode
4CH / 2CH
Variable High Pass Crossover 12DB Per Octave 20Hz - 4KHz
10Hz - 500Hz
Variable Low Pass Crossover 12DB Per Octave DUPE MODE
50Hz - 4kHz
Tone Control/parametric EQ Bass EQ
Bass Boost 0~12dB@45Hz
Variable Voltage 200mV - 10V
Signal To Noise >85dB
Frequency Response 10Hz - 45kHz
Total Harmonic Distortion (THD) < 0.05%
Speaker Level Audio Inputs Yes
Power Terminal 12V/GND 12 AWG
Speaker Terminal Wire Gauge 18 AWG
Fusing Use Extermal Fuse
Turn On Circuit Switched
Remote Turn-On / Signal Sense On
Heatsink Size Length: 8.5in x Depth: 5.75in x Height: 2.37in
Brand Hifonics
Condition New
UPC 806576228813
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